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<!--Created by IRIS RegTech Solutions_Direct, Powered by IRIS Carbon, Unique Code 6a062ba9aad0391920cf8baf, Generated At Thu, 14 May 2026 20:09:39 GMT-->
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    <link:label xlink:type="resource" xlink:label="label_DocumentInformationTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DocumentInformationTable" xml:lang="en-US" id="label_DocumentInformationTable">Document Information [Table]</link:label>
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    <link:label xlink:type="resource" xlink:label="label_AddressTypeDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AddressTypeDomain" xml:lang="en-US" id="label_AddressTypeDomain">Address Type [Domain]</link:label>
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    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_FormerAddressMember" xlink:label="FormerAddressMember" xlink:title="FormerAddressMember" />
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    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityInformationLineItems" xlink:label="EntityInformationLineItems" xlink:title="EntityInformationLineItems" />
    <link:label xlink:type="resource" xlink:label="label_EntityInformationLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_EntityInformationLineItems" xml:lang="en-US" id="label_EntityInformationLineItems">Entity Information [Line Items]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EntityInformationLineItems" xlink:to="label_EntityInformationLineItems" xlink:title="Label : EntityInformationLineItems to label_EntityInformationLineItems" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityRegistrantName" xlink:label="EntityRegistrantName" xlink:title="EntityRegistrantName" />
    <link:label xlink:type="resource" xlink:label="label_EntityRegistrantName" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_EntityRegistrantName" xml:lang="en-US" id="label_EntityRegistrantName">Entity Registrant Name</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EntityRegistrantName" xlink:to="label_EntityRegistrantName" xlink:title="Label : EntityRegistrantName to label_EntityRegistrantName" />
    <link:label xlink:type="resource" xlink:label="label_EntityRegistrantName_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_EntityRegistrantName_1" xml:lang="en-US" id="label_EntityRegistrantName_1">Entity Registrant Name</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EntityRegistrantName" xlink:to="label_EntityRegistrantName_1" xlink:title="Label : EntityRegistrantName to label_EntityRegistrantName_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentType" xlink:label="DocumentType" xlink:title="DocumentType" />
    <link:label xlink:type="resource" xlink:label="label_DocumentType" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_DocumentType" xml:lang="en-US" id="label_DocumentType">Document Type</link:label>
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DocumentType" xlink:to="label_DocumentType_1" xlink:title="Label : DocumentType to label_DocumentType_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_AmendmentFlag" xlink:label="AmendmentFlag" xlink:title="AmendmentFlag" />
    <link:label xlink:type="resource" xlink:label="label_AmendmentFlag" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_AmendmentFlag" xml:lang="en-US" id="label_AmendmentFlag">Amendment Flag</link:label>
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AmendmentFlag" xlink:to="label_AmendmentFlag_1" xlink:title="Label : AmendmentFlag to label_AmendmentFlag_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityCentralIndexKey" xlink:label="EntityCentralIndexKey" xlink:title="EntityCentralIndexKey" />
    <link:label xlink:type="resource" xlink:label="label_EntityCentralIndexKey" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_EntityCentralIndexKey" xml:lang="en-US" id="label_EntityCentralIndexKey">Entity Central Index Key</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EntityCentralIndexKey" xlink:to="label_EntityCentralIndexKey" xlink:title="Label : EntityCentralIndexKey to label_EntityCentralIndexKey" />
    <link:label xlink:type="resource" xlink:label="label_EntityCentralIndexKey_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_EntityCentralIndexKey_1" xml:lang="en-US" id="label_EntityCentralIndexKey_1">Entity Central Index Key</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EntityCentralIndexKey" xlink:to="label_EntityCentralIndexKey_1" xlink:title="Label : EntityCentralIndexKey to label_EntityCentralIndexKey_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentPeriodEndDate" xlink:label="DocumentPeriodEndDate" xlink:title="DocumentPeriodEndDate" />
    <link:label xlink:type="resource" xlink:label="label_DocumentPeriodEndDate" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_DocumentPeriodEndDate" xml:lang="en-US" id="label_DocumentPeriodEndDate">Document Period End Date</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DocumentPeriodEndDate" xlink:to="label_DocumentPeriodEndDate" xlink:title="Label : DocumentPeriodEndDate to label_DocumentPeriodEndDate" />
    <link:label xlink:type="resource" xlink:label="label_DocumentPeriodEndDate_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DocumentPeriodEndDate_1" xml:lang="en-US" id="label_DocumentPeriodEndDate_1">Document Period End Date</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DocumentPeriodEndDate" xlink:to="label_DocumentPeriodEndDate_1" xlink:title="Label : DocumentPeriodEndDate to label_DocumentPeriodEndDate_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_CurrentFiscalYearEndDate" xlink:label="CurrentFiscalYearEndDate" xlink:title="CurrentFiscalYearEndDate" />
    <link:label xlink:type="resource" xlink:label="label_CurrentFiscalYearEndDate" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_CurrentFiscalYearEndDate" xml:lang="en-US" id="label_CurrentFiscalYearEndDate">Current Fiscal Year End Date</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CurrentFiscalYearEndDate" xlink:to="label_CurrentFiscalYearEndDate" xlink:title="Label : CurrentFiscalYearEndDate to label_CurrentFiscalYearEndDate" />
    <link:label xlink:type="resource" xlink:label="label_CurrentFiscalYearEndDate_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CurrentFiscalYearEndDate_1" xml:lang="en-US" id="label_CurrentFiscalYearEndDate_1">Current Fiscal Year End Date</link:label>
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    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentFiscalYearFocus" xlink:label="DocumentFiscalYearFocus" xlink:title="DocumentFiscalYearFocus" />
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    <link:label xlink:type="resource" xlink:label="label_DocumentFiscalPeriodFocus" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_DocumentFiscalPeriodFocus" xml:lang="en-US" id="label_DocumentFiscalPeriodFocus">Document Fiscal Period Focus</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DocumentFiscalPeriodFocus" xlink:to="label_DocumentFiscalPeriodFocus" xlink:title="Label : DocumentFiscalPeriodFocus to label_DocumentFiscalPeriodFocus" />
    <link:label xlink:type="resource" xlink:label="label_DocumentFiscalPeriodFocus_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DocumentFiscalPeriodFocus_1" xml:lang="en-US" id="label_DocumentFiscalPeriodFocus_1">Document Fiscal Period Focus</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DocumentFiscalPeriodFocus" xlink:to="label_DocumentFiscalPeriodFocus_1" xlink:title="Label : DocumentFiscalPeriodFocus to label_DocumentFiscalPeriodFocus_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentQuarterlyReport" xlink:label="DocumentQuarterlyReport" xlink:title="DocumentQuarterlyReport" />
    <link:label xlink:type="resource" xlink:label="label_DocumentQuarterlyReport" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_DocumentQuarterlyReport" xml:lang="en-US" id="label_DocumentQuarterlyReport">Document Quarterly Report</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DocumentQuarterlyReport" xlink:to="label_DocumentQuarterlyReport" xlink:title="Label : DocumentQuarterlyReport to label_DocumentQuarterlyReport" />
    <link:label xlink:type="resource" xlink:label="label_DocumentQuarterlyReport_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DocumentQuarterlyReport_1" xml:lang="en-US" id="label_DocumentQuarterlyReport_1">Document Quarterly Report</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DocumentQuarterlyReport" xlink:to="label_DocumentQuarterlyReport_1" xlink:title="Label : DocumentQuarterlyReport to label_DocumentQuarterlyReport_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentTransitionReport" xlink:label="DocumentTransitionReport" xlink:title="DocumentTransitionReport" />
    <link:label xlink:type="resource" xlink:label="label_DocumentTransitionReport" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_DocumentTransitionReport" xml:lang="en-US" id="label_DocumentTransitionReport">Document Transition Report</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DocumentTransitionReport" xlink:to="label_DocumentTransitionReport" xlink:title="Label : DocumentTransitionReport to label_DocumentTransitionReport" />
    <link:label xlink:type="resource" xlink:label="label_DocumentTransitionReport_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DocumentTransitionReport_1" xml:lang="en-US" id="label_DocumentTransitionReport_1">Document Transition Report</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DocumentTransitionReport" xlink:to="label_DocumentTransitionReport_1" xlink:title="Label : DocumentTransitionReport to label_DocumentTransitionReport_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityFileNumber" xlink:label="EntityFileNumber" xlink:title="EntityFileNumber" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EntityFileNumber" xlink:to="label_EntityFileNumber" xlink:title="Label : EntityFileNumber to label_EntityFileNumber" />
    <link:label xlink:type="resource" xlink:label="label_EntityFileNumber_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_EntityFileNumber_1" xml:lang="en-US" id="label_EntityFileNumber_1">Entity File Number</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EntityFileNumber" xlink:to="label_EntityFileNumber_1" xlink:title="Label : EntityFileNumber to label_EntityFileNumber_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityIncorporationStateCountryCode" xlink:label="EntityIncorporationStateCountryCode" xlink:title="EntityIncorporationStateCountryCode" />
    <link:label xlink:type="resource" xlink:label="label_EntityIncorporationStateCountryCode" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_EntityIncorporationStateCountryCode" xml:lang="en-US" id="label_EntityIncorporationStateCountryCode">Entity Incorporation, State or Country Code</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EntityIncorporationStateCountryCode" xlink:to="label_EntityIncorporationStateCountryCode" xlink:title="Label : EntityIncorporationStateCountryCode to label_EntityIncorporationStateCountryCode" />
    <link:label xlink:type="resource" xlink:label="label_EntityIncorporationStateCountryCode_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_EntityIncorporationStateCountryCode_1" xml:lang="en-US" id="label_EntityIncorporationStateCountryCode_1">Entity Incorporation, State or Country Code</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EntityIncorporationStateCountryCode" xlink:to="label_EntityIncorporationStateCountryCode_1" xlink:title="Label : EntityIncorporationStateCountryCode to label_EntityIncorporationStateCountryCode_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityTaxIdentificationNumber" xlink:label="EntityTaxIdentificationNumber" xlink:title="EntityTaxIdentificationNumber" />
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    <link:label xlink:type="resource" xlink:label="label_EntityTaxIdentificationNumber_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_EntityTaxIdentificationNumber_1" xml:lang="en-US" id="label_EntityTaxIdentificationNumber_1">Entity Tax Identification Number</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EntityTaxIdentificationNumber" xlink:to="label_EntityTaxIdentificationNumber_1" xlink:title="Label : EntityTaxIdentificationNumber to label_EntityTaxIdentificationNumber_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressAddressLine1" xlink:label="EntityAddressAddressLine1" xlink:title="EntityAddressAddressLine1" />
    <link:label xlink:type="resource" xlink:label="label_EntityAddressAddressLine1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_EntityAddressAddressLine1" xml:lang="en-US" id="label_EntityAddressAddressLine1">Entity Address, Address Line One</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EntityAddressAddressLine1" xlink:to="label_EntityAddressAddressLine1" xlink:title="Label : EntityAddressAddressLine1 to label_EntityAddressAddressLine1" />
    <link:label xlink:type="resource" xlink:label="label_EntityAddressAddressLine1_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_EntityAddressAddressLine1_1" xml:lang="en-US" id="label_EntityAddressAddressLine1_1">Entity Address, Address Line One</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EntityAddressAddressLine1" xlink:to="label_EntityAddressAddressLine1_1" xlink:title="Label : EntityAddressAddressLine1 to label_EntityAddressAddressLine1_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressAddressLine2" xlink:label="EntityAddressAddressLine2" xlink:title="EntityAddressAddressLine2" />
    <link:label xlink:type="resource" xlink:label="label_EntityAddressAddressLine2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_EntityAddressAddressLine2" xml:lang="en-US" id="label_EntityAddressAddressLine2">Entity Address, Address Line Two</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EntityAddressAddressLine2" xlink:to="label_EntityAddressAddressLine2" xlink:title="Label : EntityAddressAddressLine2 to label_EntityAddressAddressLine2" />
    <link:label xlink:type="resource" xlink:label="label_EntityAddressAddressLine2_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_EntityAddressAddressLine2_1" xml:lang="en-US" id="label_EntityAddressAddressLine2_1">Entity Address, Address Line Two</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EntityAddressAddressLine2" xlink:to="label_EntityAddressAddressLine2_1" xlink:title="Label : EntityAddressAddressLine2 to label_EntityAddressAddressLine2_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressCityOrTown" xlink:label="EntityAddressCityOrTown" xlink:title="EntityAddressCityOrTown" />
    <link:label xlink:type="resource" xlink:label="label_EntityAddressCityOrTown" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_EntityAddressCityOrTown" xml:lang="en-US" id="label_EntityAddressCityOrTown">Entity Address, City or Town</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EntityAddressCityOrTown" xlink:to="label_EntityAddressCityOrTown" xlink:title="Label : EntityAddressCityOrTown to label_EntityAddressCityOrTown" />
    <link:label xlink:type="resource" xlink:label="label_EntityAddressCityOrTown_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_EntityAddressCityOrTown_1" xml:lang="en-US" id="label_EntityAddressCityOrTown_1">Entity Address, City or Town</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EntityAddressCityOrTown" xlink:to="label_EntityAddressCityOrTown_1" xlink:title="Label : EntityAddressCityOrTown to label_EntityAddressCityOrTown_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressStateOrProvince" xlink:label="EntityAddressStateOrProvince" xlink:title="EntityAddressStateOrProvince" />
    <link:label xlink:type="resource" xlink:label="label_EntityAddressStateOrProvince" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_EntityAddressStateOrProvince" xml:lang="en-US" id="label_EntityAddressStateOrProvince">Entity Address, State or Province</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EntityAddressStateOrProvince" xlink:to="label_EntityAddressStateOrProvince" xlink:title="Label : EntityAddressStateOrProvince to label_EntityAddressStateOrProvince" />
    <link:label xlink:type="resource" xlink:label="label_EntityAddressStateOrProvince_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_EntityAddressStateOrProvince_1" xml:lang="en-US" id="label_EntityAddressStateOrProvince_1">Entity Address, State or Province</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EntityAddressStateOrProvince" xlink:to="label_EntityAddressStateOrProvince_1" xlink:title="Label : EntityAddressStateOrProvince to label_EntityAddressStateOrProvince_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressPostalZipCode" xlink:label="EntityAddressPostalZipCode" xlink:title="EntityAddressPostalZipCode" />
    <link:label xlink:type="resource" xlink:label="label_EntityAddressPostalZipCode" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_EntityAddressPostalZipCode" xml:lang="en-US" id="label_EntityAddressPostalZipCode">Entity Address, Postal Zip Code</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EntityAddressPostalZipCode" xlink:to="label_EntityAddressPostalZipCode" xlink:title="Label : EntityAddressPostalZipCode to label_EntityAddressPostalZipCode" />
    <link:label xlink:type="resource" xlink:label="label_EntityAddressPostalZipCode_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_EntityAddressPostalZipCode_1" xml:lang="en-US" id="label_EntityAddressPostalZipCode_1">Entity Address, Postal Zip Code</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EntityAddressPostalZipCode" xlink:to="label_EntityAddressPostalZipCode_1" xlink:title="Label : EntityAddressPostalZipCode to label_EntityAddressPostalZipCode_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_CityAreaCode" xlink:label="CityAreaCode" xlink:title="CityAreaCode" />
    <link:label xlink:type="resource" xlink:label="label_CityAreaCode" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_CityAreaCode" xml:lang="en-US" id="label_CityAreaCode">City Area Code</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CityAreaCode" xlink:to="label_CityAreaCode" xlink:title="Label : CityAreaCode to label_CityAreaCode" />
    <link:label xlink:type="resource" xlink:label="label_CityAreaCode_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CityAreaCode_1" xml:lang="en-US" id="label_CityAreaCode_1">City Area Code</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CityAreaCode" xlink:to="label_CityAreaCode_1" xlink:title="Label : CityAreaCode to label_CityAreaCode_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_LocalPhoneNumber" xlink:label="LocalPhoneNumber" xlink:title="LocalPhoneNumber" />
    <link:label xlink:type="resource" xlink:label="label_LocalPhoneNumber" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_LocalPhoneNumber" xml:lang="en-US" id="label_LocalPhoneNumber">Local Phone Number</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LocalPhoneNumber" xlink:to="label_LocalPhoneNumber" xlink:title="Label : LocalPhoneNumber to label_LocalPhoneNumber" />
    <link:label xlink:type="resource" xlink:label="label_LocalPhoneNumber_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_LocalPhoneNumber_1" xml:lang="en-US" id="label_LocalPhoneNumber_1">Local Phone Number</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LocalPhoneNumber" xlink:to="label_LocalPhoneNumber_1" xlink:title="Label : LocalPhoneNumber to label_LocalPhoneNumber_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_Security12bTitle" xlink:label="Security12bTitle" xlink:title="Security12bTitle" />
    <link:label xlink:type="resource" xlink:label="label_Security12bTitle" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_Security12bTitle" xml:lang="en-US" id="label_Security12bTitle">Title of 12(b) Security</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="Security12bTitle" xlink:to="label_Security12bTitle" xlink:title="Label : Security12bTitle to label_Security12bTitle" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_TradingSymbol" xlink:label="TradingSymbol" xlink:title="TradingSymbol" />
    <link:label xlink:type="resource" xlink:label="label_TradingSymbol" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_TradingSymbol" xml:lang="en-US" id="label_TradingSymbol">Trading Symbol</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="TradingSymbol" xlink:to="label_TradingSymbol" xlink:title="Label : TradingSymbol to label_TradingSymbol" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_SecurityExchangeName" xlink:label="SecurityExchangeName" xlink:title="SecurityExchangeName" />
    <link:label xlink:type="resource" xlink:label="label_SecurityExchangeName" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_SecurityExchangeName" xml:lang="en-US" id="label_SecurityExchangeName">Security Exchange Name</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SecurityExchangeName" xlink:to="label_SecurityExchangeName" xlink:title="Label : SecurityExchangeName to label_SecurityExchangeName" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityCurrentReportingStatus" xlink:label="EntityCurrentReportingStatus" xlink:title="EntityCurrentReportingStatus" />
    <link:label xlink:type="resource" xlink:label="label_EntityCurrentReportingStatus" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_EntityCurrentReportingStatus" xml:lang="en-US" id="label_EntityCurrentReportingStatus">Entity Current Reporting Status</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EntityCurrentReportingStatus" xlink:to="label_EntityCurrentReportingStatus" xlink:title="Label : EntityCurrentReportingStatus to label_EntityCurrentReportingStatus" />
    <link:label xlink:type="resource" xlink:label="label_EntityCurrentReportingStatus_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_EntityCurrentReportingStatus_1" xml:lang="en-US" id="label_EntityCurrentReportingStatus_1">Entity Current Reporting Status</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EntityCurrentReportingStatus" xlink:to="label_EntityCurrentReportingStatus_1" xlink:title="Label : EntityCurrentReportingStatus to label_EntityCurrentReportingStatus_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityInteractiveDataCurrent" xlink:label="EntityInteractiveDataCurrent" xlink:title="EntityInteractiveDataCurrent" />
    <link:label xlink:type="resource" xlink:label="label_EntityInteractiveDataCurrent" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_EntityInteractiveDataCurrent" xml:lang="en-US" id="label_EntityInteractiveDataCurrent">Entity Interactive Data Current</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EntityInteractiveDataCurrent" xlink:to="label_EntityInteractiveDataCurrent" xlink:title="Label : EntityInteractiveDataCurrent to label_EntityInteractiveDataCurrent" />
    <link:label xlink:type="resource" xlink:label="label_EntityInteractiveDataCurrent_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_EntityInteractiveDataCurrent_1" xml:lang="en-US" id="label_EntityInteractiveDataCurrent_1">Entity Interactive Data Current</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EntityInteractiveDataCurrent" xlink:to="label_EntityInteractiveDataCurrent_1" xlink:title="Label : EntityInteractiveDataCurrent to label_EntityInteractiveDataCurrent_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityFilerCategory" xlink:label="EntityFilerCategory" xlink:title="EntityFilerCategory" />
    <link:label xlink:type="resource" xlink:label="label_EntityFilerCategory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_EntityFilerCategory" xml:lang="en-US" id="label_EntityFilerCategory">Entity Filer Category</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EntityFilerCategory" xlink:to="label_EntityFilerCategory" xlink:title="Label : EntityFilerCategory to label_EntityFilerCategory" />
    <link:label xlink:type="resource" xlink:label="label_EntityFilerCategory_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_EntityFilerCategory_1" xml:lang="en-US" id="label_EntityFilerCategory_1">Entity Filer Category</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EntityFilerCategory" xlink:to="label_EntityFilerCategory_1" xlink:title="Label : EntityFilerCategory to label_EntityFilerCategory_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntitySmallBusiness" xlink:label="EntitySmallBusiness" xlink:title="EntitySmallBusiness" />
    <link:label xlink:type="resource" xlink:label="label_EntitySmallBusiness" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_EntitySmallBusiness" xml:lang="en-US" id="label_EntitySmallBusiness">Entity Small Business</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EntitySmallBusiness" xlink:to="label_EntitySmallBusiness" xlink:title="Label : EntitySmallBusiness to label_EntitySmallBusiness" />
    <link:label xlink:type="resource" xlink:label="label_EntitySmallBusiness_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_EntitySmallBusiness_1" xml:lang="en-US" id="label_EntitySmallBusiness_1">Entity Small Business</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EntitySmallBusiness" xlink:to="label_EntitySmallBusiness_1" xlink:title="Label : EntitySmallBusiness to label_EntitySmallBusiness_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityEmergingGrowthCompany" xlink:label="EntityEmergingGrowthCompany" xlink:title="EntityEmergingGrowthCompany" />
    <link:label xlink:type="resource" xlink:label="label_EntityEmergingGrowthCompany" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_EntityEmergingGrowthCompany" xml:lang="en-US" id="label_EntityEmergingGrowthCompany">Entity Emerging Growth Company</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EntityEmergingGrowthCompany" xlink:to="label_EntityEmergingGrowthCompany" xlink:title="Label : EntityEmergingGrowthCompany to label_EntityEmergingGrowthCompany" />
    <link:label xlink:type="resource" xlink:label="label_EntityEmergingGrowthCompany_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_EntityEmergingGrowthCompany_1" xml:lang="en-US" id="label_EntityEmergingGrowthCompany_1">Entity Emerging Growth Company</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EntityEmergingGrowthCompany" xlink:to="label_EntityEmergingGrowthCompany_1" xlink:title="Label : EntityEmergingGrowthCompany to label_EntityEmergingGrowthCompany_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityExTransitionPeriod" xlink:label="EntityExTransitionPeriod" xlink:title="EntityExTransitionPeriod" />
    <link:label xlink:type="resource" xlink:label="label_EntityExTransitionPeriod" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_EntityExTransitionPeriod" xml:lang="en-US" id="label_EntityExTransitionPeriod">Entity Ex Transition Period</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EntityExTransitionPeriod" xlink:to="label_EntityExTransitionPeriod" xlink:title="Label : EntityExTransitionPeriod to label_EntityExTransitionPeriod" />
    <link:label xlink:type="resource" xlink:label="label_EntityExTransitionPeriod_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_EntityExTransitionPeriod_1" xml:lang="en-US" id="label_EntityExTransitionPeriod_1">Entity Ex Transition Period</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EntityExTransitionPeriod" xlink:to="label_EntityExTransitionPeriod_1" xlink:title="Label : EntityExTransitionPeriod to label_EntityExTransitionPeriod_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityShellCompany" xlink:label="EntityShellCompany" xlink:title="EntityShellCompany" />
    <link:label xlink:type="resource" xlink:label="label_EntityShellCompany" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_EntityShellCompany" xml:lang="en-US" id="label_EntityShellCompany">Entity Shell Company</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EntityShellCompany" xlink:to="label_EntityShellCompany" xlink:title="Label : EntityShellCompany to label_EntityShellCompany" />
    <link:label xlink:type="resource" xlink:label="label_EntityShellCompany_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_EntityShellCompany_1" xml:lang="en-US" id="label_EntityShellCompany_1">Entity Shell Company</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EntityShellCompany" xlink:to="label_EntityShellCompany_1" xlink:title="Label : EntityShellCompany to label_EntityShellCompany_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityCommonStockSharesOutstanding" xlink:label="EntityCommonStockSharesOutstanding" xlink:title="EntityCommonStockSharesOutstanding" />
    <link:label xlink:type="resource" xlink:label="label_EntityCommonStockSharesOutstanding" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_EntityCommonStockSharesOutstanding" xml:lang="en-US" id="label_EntityCommonStockSharesOutstanding">Entity Common Stock, Shares Outstanding</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EntityCommonStockSharesOutstanding" xlink:to="label_EntityCommonStockSharesOutstanding" xlink:title="Label : EntityCommonStockSharesOutstanding to label_EntityCommonStockSharesOutstanding" />
    <link:label xlink:type="resource" xlink:label="label_EntityCommonStockSharesOutstanding_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_EntityCommonStockSharesOutstanding_1" xml:lang="en-US" id="label_EntityCommonStockSharesOutstanding_1">Entity Common Stock, Shares Outstanding</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EntityCommonStockSharesOutstanding" xlink:to="label_EntityCommonStockSharesOutstanding_1" xlink:title="Label : EntityCommonStockSharesOutstanding to label_EntityCommonStockSharesOutstanding_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementOfFinancialPositionAbstract" xlink:label="StatementOfFinancialPositionAbstract" xlink:title="StatementOfFinancialPositionAbstract" />
    <link:label xlink:type="resource" xlink:label="label_StatementOfFinancialPositionAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_StatementOfFinancialPositionAbstract" xml:lang="en-US" id="label_StatementOfFinancialPositionAbstract">Statement of Financial Position [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StatementOfFinancialPositionAbstract" xlink:to="label_StatementOfFinancialPositionAbstract" xlink:title="Label : StatementOfFinancialPositionAbstract to label_StatementOfFinancialPositionAbstract" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetsAbstract" xlink:label="AssetsAbstract" xlink:title="AssetsAbstract" />
    <link:label xlink:type="resource" xlink:label="label_AssetsAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AssetsAbstract" xml:lang="en-US" id="label_AssetsAbstract">Assets [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AssetsAbstract" xlink:to="label_AssetsAbstract" xlink:title="Label : AssetsAbstract to label_AssetsAbstract" />
    <link:label xlink:type="resource" xlink:label="label_AssetsAbstract_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_AssetsAbstract_1" xml:lang="en-US" id="label_AssetsAbstract_1">Assets</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AssetsAbstract" xlink:to="label_AssetsAbstract_1" xlink:title="Label : AssetsAbstract to label_AssetsAbstract_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetsCurrentAbstract" xlink:label="AssetsCurrentAbstract" xlink:title="AssetsCurrentAbstract" />
    <link:label xlink:type="resource" xlink:label="label_AssetsCurrentAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AssetsCurrentAbstract" xml:lang="en-US" id="label_AssetsCurrentAbstract">Assets, Current [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AssetsCurrentAbstract" xlink:to="label_AssetsCurrentAbstract" xlink:title="Label : AssetsCurrentAbstract to label_AssetsCurrentAbstract" />
    <link:label xlink:type="resource" xlink:label="label_AssetsCurrentAbstract_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_AssetsCurrentAbstract_1" xml:lang="en-US" id="label_AssetsCurrentAbstract_1">Current assets:</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AssetsCurrentAbstract" xlink:to="label_AssetsCurrentAbstract_1" xlink:title="Label : AssetsCurrentAbstract to label_AssetsCurrentAbstract_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:label="CashAndCashEquivalentsAtCarryingValue" xlink:title="CashAndCashEquivalentsAtCarryingValue" />
    <link:label xlink:type="resource" xlink:label="label_CashAndCashEquivalentsAtCarryingValue" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_CashAndCashEquivalentsAtCarryingValue" xml:lang="en-US" id="label_CashAndCashEquivalentsAtCarryingValue">Cash and cash equivalents</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CashAndCashEquivalentsAtCarryingValue" xlink:to="label_CashAndCashEquivalentsAtCarryingValue" xlink:title="Label : CashAndCashEquivalentsAtCarryingValue to label_CashAndCashEquivalentsAtCarryingValue" />
    <link:label xlink:type="resource" xlink:label="label_CashAndCashEquivalentsAtCarryingValue_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CashAndCashEquivalentsAtCarryingValue_1" xml:lang="en-US" id="label_CashAndCashEquivalentsAtCarryingValue_1">Cash and Cash Equivalents, at Carrying Value</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CashAndCashEquivalentsAtCarryingValue" xlink:to="label_CashAndCashEquivalentsAtCarryingValue_1" xlink:title="Label : CashAndCashEquivalentsAtCarryingValue to label_CashAndCashEquivalentsAtCarryingValue_1" />
    <link:label xlink:type="resource" xlink:label="label_CashAndCashEquivalentsAtCarryingValue_2" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:title="label_CashAndCashEquivalentsAtCarryingValue_2" xml:lang="en-US" id="label_CashAndCashEquivalentsAtCarryingValue_2">Cash, end of period</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CashAndCashEquivalentsAtCarryingValue" xlink:to="label_CashAndCashEquivalentsAtCarryingValue_2" xlink:title="Label : CashAndCashEquivalentsAtCarryingValue to label_CashAndCashEquivalentsAtCarryingValue_2" />
    <link:label xlink:type="resource" xlink:label="label_CashAndCashEquivalentsAtCarryingValue_3" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:title="label_CashAndCashEquivalentsAtCarryingValue_3" xml:lang="en-US" id="label_CashAndCashEquivalentsAtCarryingValue_3">Cash, beginning of period</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CashAndCashEquivalentsAtCarryingValue" xlink:to="label_CashAndCashEquivalentsAtCarryingValue_3" xlink:title="Label : CashAndCashEquivalentsAtCarryingValue to label_CashAndCashEquivalentsAtCarryingValue_3" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShortTermInvestments" xlink:label="ShortTermInvestments" xlink:title="ShortTermInvestments" />
    <link:label xlink:type="resource" xlink:label="label_ShortTermInvestments" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ShortTermInvestments" xml:lang="en-US" id="label_ShortTermInvestments">Short term investments</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ShortTermInvestments" xlink:to="label_ShortTermInvestments" xlink:title="Label : ShortTermInvestments to label_ShortTermInvestments" />
    <link:label xlink:type="resource" xlink:label="label_ShortTermInvestments_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ShortTermInvestments_1" xml:lang="en-US" id="label_ShortTermInvestments_1">Short-Term Investments</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ShortTermInvestments" xlink:to="label_ShortTermInvestments_1" xlink:title="Label : ShortTermInvestments to label_ShortTermInvestments_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccountsReceivableNetCurrent" xlink:label="AccountsReceivableNetCurrent" xlink:title="AccountsReceivableNetCurrent" />
    <link:label xlink:type="resource" xlink:label="label_AccountsReceivableNetCurrent" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AccountsReceivableNetCurrent" xml:lang="en-US" id="label_AccountsReceivableNetCurrent">Accounts Receivable, after Allowance for Credit Loss, Current</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AccountsReceivableNetCurrent" xlink:to="label_AccountsReceivableNetCurrent" xlink:title="Label : AccountsReceivableNetCurrent to label_AccountsReceivableNetCurrent" />
    <link:label xlink:type="resource" xlink:label="label_AccountsReceivableNetCurrent_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_AccountsReceivableNetCurrent_1" xml:lang="en-US" id="label_AccountsReceivableNetCurrent_1">Accounts receivable</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AccountsReceivableNetCurrent" xlink:to="label_AccountsReceivableNetCurrent_1" xlink:title="Label : AccountsReceivableNetCurrent to label_AccountsReceivableNetCurrent_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherAssetsCurrent" xlink:label="OtherAssetsCurrent" xlink:title="OtherAssetsCurrent" />
    <link:label xlink:type="resource" xlink:label="label_OtherAssetsCurrent" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_OtherAssetsCurrent" xml:lang="en-US" id="label_OtherAssetsCurrent">Other Assets, Current</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OtherAssetsCurrent" xlink:to="label_OtherAssetsCurrent" xlink:title="Label : OtherAssetsCurrent to label_OtherAssetsCurrent" />
    <link:label xlink:type="resource" xlink:label="label_OtherAssetsCurrent_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_OtherAssetsCurrent_1" xml:lang="en-US" id="label_OtherAssetsCurrent_1">Other current assets</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OtherAssetsCurrent" xlink:to="label_OtherAssetsCurrent_1" xlink:title="Label : OtherAssetsCurrent to label_OtherAssetsCurrent_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetsCurrent" xlink:label="AssetsCurrent" xlink:title="AssetsCurrent" />
    <link:label xlink:type="resource" xlink:label="label_AssetsCurrent" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AssetsCurrent" xml:lang="en-US" id="label_AssetsCurrent">Assets, Current</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AssetsCurrent" xlink:to="label_AssetsCurrent" xlink:title="Label : AssetsCurrent to label_AssetsCurrent" />
    <link:label xlink:type="resource" xlink:label="label_AssetsCurrent_1" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="label_AssetsCurrent_1" xml:lang="en-US" id="label_AssetsCurrent_1">Total current assets</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AssetsCurrent" xlink:to="label_AssetsCurrent_1" xlink:title="Label : AssetsCurrent to label_AssetsCurrent_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingLeaseRightOfUseAsset" xlink:label="OperatingLeaseRightOfUseAsset" xlink:title="OperatingLeaseRightOfUseAsset" />
    <link:label xlink:type="resource" xlink:label="label_OperatingLeaseRightOfUseAsset" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_OperatingLeaseRightOfUseAsset" xml:lang="en-US" id="label_OperatingLeaseRightOfUseAsset">Right-of-use lease assets</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OperatingLeaseRightOfUseAsset" xlink:to="label_OperatingLeaseRightOfUseAsset" xlink:title="Label : OperatingLeaseRightOfUseAsset to label_OperatingLeaseRightOfUseAsset" />
    <link:label xlink:type="resource" xlink:label="label_OperatingLeaseRightOfUseAsset_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_OperatingLeaseRightOfUseAsset_1" xml:lang="en-US" id="label_OperatingLeaseRightOfUseAsset_1">Operating Lease, Right-of-Use Asset</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OperatingLeaseRightOfUseAsset" xlink:to="label_OperatingLeaseRightOfUseAsset_1" xlink:title="Label : OperatingLeaseRightOfUseAsset to label_OperatingLeaseRightOfUseAsset_1" />
    <link:label xlink:type="resource" xlink:label="label_OperatingLeaseRightOfUseAsset_2" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="label_OperatingLeaseRightOfUseAsset_2" xml:lang="en-US" id="label_OperatingLeaseRightOfUseAsset_2">Operating lease right-of-use assets</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OperatingLeaseRightOfUseAsset" xlink:to="label_OperatingLeaseRightOfUseAsset_2" xlink:title="Label : OperatingLeaseRightOfUseAsset to label_OperatingLeaseRightOfUseAsset_2" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Goodwill" xlink:label="Goodwill" xlink:title="Goodwill" />
    <link:label xlink:type="resource" xlink:label="label_Goodwill" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_Goodwill" xml:lang="en-US" id="label_Goodwill">Goodwill</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="Goodwill" xlink:to="label_Goodwill" xlink:title="Label : Goodwill to label_Goodwill" />
    <link:label xlink:type="resource" xlink:label="label_Goodwill_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_Goodwill_1" xml:lang="en-US" id="label_Goodwill_1">Goodwill</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="Goodwill" xlink:to="label_Goodwill_1" xlink:title="Label : Goodwill to label_Goodwill_1" />
    <link:label xlink:type="resource" xlink:label="label_Goodwill_2" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:title="label_Goodwill_2" xml:lang="en-US" id="label_Goodwill_2">Goodwill, Beginning Balance</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="Goodwill" xlink:to="label_Goodwill_2" xlink:title="Label : Goodwill to label_Goodwill_2" />
    <link:label xlink:type="resource" xlink:label="label_Goodwill_3" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:title="label_Goodwill_3" xml:lang="en-US" id="label_Goodwill_3">Goodwill, Ending Balance</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="Goodwill" xlink:to="label_Goodwill_3" xlink:title="Label : Goodwill to label_Goodwill_3" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherAssetsNoncurrent" xlink:label="OtherAssetsNoncurrent" xlink:title="OtherAssetsNoncurrent" />
    <link:label xlink:type="resource" xlink:label="label_OtherAssetsNoncurrent" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_OtherAssetsNoncurrent" xml:lang="en-US" id="label_OtherAssetsNoncurrent">Other assets</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OtherAssetsNoncurrent" xlink:to="label_OtherAssetsNoncurrent" xlink:title="Label : OtherAssetsNoncurrent to label_OtherAssetsNoncurrent" />
    <link:label xlink:type="resource" xlink:label="label_OtherAssetsNoncurrent_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_OtherAssetsNoncurrent_1" xml:lang="en-US" id="label_OtherAssetsNoncurrent_1">Other Assets, Noncurrent</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OtherAssetsNoncurrent" xlink:to="label_OtherAssetsNoncurrent_1" xlink:title="Label : OtherAssetsNoncurrent to label_OtherAssetsNoncurrent_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Assets" xlink:label="Assets" xlink:title="Assets" />
    <link:label xlink:type="resource" xlink:label="label_Assets" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_Assets" xml:lang="en-US" id="label_Assets">Assets</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="Assets" xlink:to="label_Assets" xlink:title="Label : Assets to label_Assets" />
    <link:label xlink:type="resource" xlink:label="label_Assets_1" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="label_Assets_1" xml:lang="en-US" id="label_Assets_1">Total assets</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="Assets" xlink:to="label_Assets_1" xlink:title="Label : Assets to label_Assets_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LiabilitiesAndStockholdersEquityAbstract" xlink:label="LiabilitiesAndStockholdersEquityAbstract" xlink:title="LiabilitiesAndStockholdersEquityAbstract" />
    <link:label xlink:type="resource" xlink:label="label_LiabilitiesAndStockholdersEquityAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_LiabilitiesAndStockholdersEquityAbstract" xml:lang="en-US" id="label_LiabilitiesAndStockholdersEquityAbstract">Liabilities and Equity [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LiabilitiesAndStockholdersEquityAbstract" xlink:to="label_LiabilitiesAndStockholdersEquityAbstract" xlink:title="Label : LiabilitiesAndStockholdersEquityAbstract to label_LiabilitiesAndStockholdersEquityAbstract" />
    <link:label xlink:type="resource" xlink:label="label_LiabilitiesAndStockholdersEquityAbstract_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_LiabilitiesAndStockholdersEquityAbstract_1" xml:lang="en-US" id="label_LiabilitiesAndStockholdersEquityAbstract_1">Liabilities and stockholders&#x2019; equity</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LiabilitiesAndStockholdersEquityAbstract" xlink:to="label_LiabilitiesAndStockholdersEquityAbstract_1" xlink:title="Label : LiabilitiesAndStockholdersEquityAbstract to label_LiabilitiesAndStockholdersEquityAbstract_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LiabilitiesCurrentAbstract" xlink:label="LiabilitiesCurrentAbstract" xlink:title="LiabilitiesCurrentAbstract" />
    <link:label xlink:type="resource" xlink:label="label_LiabilitiesCurrentAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_LiabilitiesCurrentAbstract" xml:lang="en-US" id="label_LiabilitiesCurrentAbstract">Liabilities, Current [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LiabilitiesCurrentAbstract" xlink:to="label_LiabilitiesCurrentAbstract" xlink:title="Label : LiabilitiesCurrentAbstract to label_LiabilitiesCurrentAbstract" />
    <link:label xlink:type="resource" xlink:label="label_LiabilitiesCurrentAbstract_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_LiabilitiesCurrentAbstract_1" xml:lang="en-US" id="label_LiabilitiesCurrentAbstract_1">Current liabilities:</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LiabilitiesCurrentAbstract" xlink:to="label_LiabilitiesCurrentAbstract_1" xlink:title="Label : LiabilitiesCurrentAbstract to label_LiabilitiesCurrentAbstract_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccountsPayableCurrent" xlink:label="AccountsPayableCurrent" xlink:title="AccountsPayableCurrent" />
    <link:label xlink:type="resource" xlink:label="label_AccountsPayableCurrent" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_AccountsPayableCurrent" xml:lang="en-US" id="label_AccountsPayableCurrent">Accounts payable</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AccountsPayableCurrent" xlink:to="label_AccountsPayableCurrent" xlink:title="Label : AccountsPayableCurrent to label_AccountsPayableCurrent" />
    <link:label xlink:type="resource" xlink:label="label_AccountsPayableCurrent_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AccountsPayableCurrent_1" xml:lang="en-US" id="label_AccountsPayableCurrent_1">Accounts Payable, Current</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AccountsPayableCurrent" xlink:to="label_AccountsPayableCurrent_1" xlink:title="Label : AccountsPayableCurrent to label_AccountsPayableCurrent_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccountsPayableAndOtherAccruedLiabilitiesCurrent" xlink:label="AccountsPayableAndOtherAccruedLiabilitiesCurrent" xlink:title="AccountsPayableAndOtherAccruedLiabilitiesCurrent" />
    <link:label xlink:type="resource" xlink:label="label_AccountsPayableAndOtherAccruedLiabilitiesCurrent" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="label_AccountsPayableAndOtherAccruedLiabilitiesCurrent" xml:lang="en-US" id="label_AccountsPayableAndOtherAccruedLiabilitiesCurrent">Total</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AccountsPayableAndOtherAccruedLiabilitiesCurrent" xlink:to="label_AccountsPayableAndOtherAccruedLiabilitiesCurrent" xlink:title="Label : AccountsPayableAndOtherAccruedLiabilitiesCurrent to label_AccountsPayableAndOtherAccruedLiabilitiesCurrent" />
    <link:label xlink:type="resource" xlink:label="label_AccountsPayableAndOtherAccruedLiabilitiesCurrent_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AccountsPayableAndOtherAccruedLiabilitiesCurrent_1" xml:lang="en-US" id="label_AccountsPayableAndOtherAccruedLiabilitiesCurrent_1">Accounts Payable and Other Accrued Liabilities, Current</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AccountsPayableAndOtherAccruedLiabilitiesCurrent" xlink:to="label_AccountsPayableAndOtherAccruedLiabilitiesCurrent_1" xlink:title="Label : AccountsPayableAndOtherAccruedLiabilitiesCurrent to label_AccountsPayableAndOtherAccruedLiabilitiesCurrent_1" />
    <link:label xlink:type="resource" xlink:label="label_AccountsPayableAndOtherAccruedLiabilitiesCurrent_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_AccountsPayableAndOtherAccruedLiabilitiesCurrent_2" xml:lang="en-US" id="label_AccountsPayableAndOtherAccruedLiabilitiesCurrent_2">Accrued expenses and other current liabilities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AccountsPayableAndOtherAccruedLiabilitiesCurrent" xlink:to="label_AccountsPayableAndOtherAccruedLiabilitiesCurrent_2" xlink:title="Label : AccountsPayableAndOtherAccruedLiabilitiesCurrent to label_AccountsPayableAndOtherAccruedLiabilitiesCurrent_2" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingLeaseLiabilityCurrent" xlink:label="OperatingLeaseLiabilityCurrent" xlink:title="OperatingLeaseLiabilityCurrent" />
    <link:label xlink:type="resource" xlink:label="label_OperatingLeaseLiabilityCurrent" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_OperatingLeaseLiabilityCurrent" xml:lang="en-US" id="label_OperatingLeaseLiabilityCurrent">Operating lease current liabilities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OperatingLeaseLiabilityCurrent" xlink:to="label_OperatingLeaseLiabilityCurrent" xlink:title="Label : OperatingLeaseLiabilityCurrent to label_OperatingLeaseLiabilityCurrent" />
    <link:label xlink:type="resource" xlink:label="label_OperatingLeaseLiabilityCurrent_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_OperatingLeaseLiabilityCurrent_1" xml:lang="en-US" id="label_OperatingLeaseLiabilityCurrent_1">Operating Lease, Liability, Current</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OperatingLeaseLiabilityCurrent" xlink:to="label_OperatingLeaseLiabilityCurrent_1" xlink:title="Label : OperatingLeaseLiabilityCurrent to label_OperatingLeaseLiabilityCurrent_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredRevenueCurrent" xlink:label="DeferredRevenueCurrent" xlink:title="DeferredRevenueCurrent" />
    <link:label xlink:type="resource" xlink:label="label_DeferredRevenueCurrent" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DeferredRevenueCurrent" xml:lang="en-US" id="label_DeferredRevenueCurrent">Deferred Revenue, Current</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DeferredRevenueCurrent" xlink:to="label_DeferredRevenueCurrent" xlink:title="Label : DeferredRevenueCurrent to label_DeferredRevenueCurrent" />
    <link:label xlink:type="resource" xlink:label="label_DeferredRevenueCurrent_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_DeferredRevenueCurrent_1" xml:lang="en-US" id="label_DeferredRevenueCurrent_1">Deferred revenue</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DeferredRevenueCurrent" xlink:to="label_DeferredRevenueCurrent_1" xlink:title="Label : DeferredRevenueCurrent to label_DeferredRevenueCurrent_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LiabilitiesCurrent" xlink:label="LiabilitiesCurrent" xlink:title="LiabilitiesCurrent" />
    <link:label xlink:type="resource" xlink:label="label_LiabilitiesCurrent" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_LiabilitiesCurrent" xml:lang="en-US" id="label_LiabilitiesCurrent">Liabilities, Current</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LiabilitiesCurrent" xlink:to="label_LiabilitiesCurrent" xlink:title="Label : LiabilitiesCurrent to label_LiabilitiesCurrent" />
    <link:label xlink:type="resource" xlink:label="label_LiabilitiesCurrent_1" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="label_LiabilitiesCurrent_1" xml:lang="en-US" id="label_LiabilitiesCurrent_1">Total current liabilities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LiabilitiesCurrent" xlink:to="label_LiabilitiesCurrent_1" xlink:title="Label : LiabilitiesCurrent to label_LiabilitiesCurrent_1" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_WarrantLiabilitiesNonCurrent" xlink:label="WarrantLiabilitiesNonCurrent" xlink:title="WarrantLiabilitiesNonCurrent" />
    <link:label xlink:type="resource" xlink:label="label_WarrantLiabilitiesNonCurrent" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_WarrantLiabilitiesNonCurrent" xml:lang="en-US" id="label_WarrantLiabilitiesNonCurrent">Warrant Liabilities, Non-Current</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WarrantLiabilitiesNonCurrent" xlink:to="label_WarrantLiabilitiesNonCurrent" xlink:title="Label : WarrantLiabilitiesNonCurrent to label_WarrantLiabilitiesNonCurrent" />
    <link:label xlink:type="resource" xlink:label="label_WarrantLiabilitiesNonCurrent_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_WarrantLiabilitiesNonCurrent_1" xml:lang="en-US" id="label_WarrantLiabilitiesNonCurrent_1">Warrants</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WarrantLiabilitiesNonCurrent" xlink:to="label_WarrantLiabilitiesNonCurrent_1" xlink:title="Label : WarrantLiabilitiesNonCurrent to label_WarrantLiabilitiesNonCurrent_1" />
    <link:label xlink:type="resource" xlink:label="label_WarrantLiabilitiesNonCurrent_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_WarrantLiabilitiesNonCurrent_2" xml:lang="en-US" id="label_WarrantLiabilitiesNonCurrent_2">The amount of obligations related to warrant liabilities, which is expected to be paid after one year or beyond the normal operating cycle, if longer.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WarrantLiabilitiesNonCurrent" xlink:to="label_WarrantLiabilitiesNonCurrent_2" xlink:title="Label : WarrantLiabilitiesNonCurrent to label_WarrantLiabilitiesNonCurrent_2" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingLeaseLiabilityNoncurrent" xlink:label="OperatingLeaseLiabilityNoncurrent" xlink:title="OperatingLeaseLiabilityNoncurrent" />
    <link:label xlink:type="resource" xlink:label="label_OperatingLeaseLiabilityNoncurrent" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_OperatingLeaseLiabilityNoncurrent" xml:lang="en-US" id="label_OperatingLeaseLiabilityNoncurrent">Operating Lease, Liability, Noncurrent</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OperatingLeaseLiabilityNoncurrent" xlink:to="label_OperatingLeaseLiabilityNoncurrent" xlink:title="Label : OperatingLeaseLiabilityNoncurrent to label_OperatingLeaseLiabilityNoncurrent" />
    <link:label xlink:type="resource" xlink:label="label_OperatingLeaseLiabilityNoncurrent_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_OperatingLeaseLiabilityNoncurrent_1" xml:lang="en-US" id="label_OperatingLeaseLiabilityNoncurrent_1">Operating lease noncurrent liabilities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OperatingLeaseLiabilityNoncurrent" xlink:to="label_OperatingLeaseLiabilityNoncurrent_1" xlink:title="Label : OperatingLeaseLiabilityNoncurrent to label_OperatingLeaseLiabilityNoncurrent_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherLiabilitiesNoncurrent" xlink:label="OtherLiabilitiesNoncurrent" xlink:title="OtherLiabilitiesNoncurrent" />
    <link:label xlink:type="resource" xlink:label="label_OtherLiabilitiesNoncurrent" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_OtherLiabilitiesNoncurrent" xml:lang="en-US" id="label_OtherLiabilitiesNoncurrent">Other long-term liabilities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OtherLiabilitiesNoncurrent" xlink:to="label_OtherLiabilitiesNoncurrent" xlink:title="Label : OtherLiabilitiesNoncurrent to label_OtherLiabilitiesNoncurrent" />
    <link:label xlink:type="resource" xlink:label="label_OtherLiabilitiesNoncurrent_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_OtherLiabilitiesNoncurrent_1" xml:lang="en-US" id="label_OtherLiabilitiesNoncurrent_1">Other Liabilities, Noncurrent</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OtherLiabilitiesNoncurrent" xlink:to="label_OtherLiabilitiesNoncurrent_1" xlink:title="Label : OtherLiabilitiesNoncurrent to label_OtherLiabilitiesNoncurrent_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Liabilities" xlink:label="Liabilities" xlink:title="Liabilities" />
    <link:label xlink:type="resource" xlink:label="label_Liabilities" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="label_Liabilities" xml:lang="en-US" id="label_Liabilities">Total liabilities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="Liabilities" xlink:to="label_Liabilities" xlink:title="Label : Liabilities to label_Liabilities" />
    <link:label xlink:type="resource" xlink:label="label_Liabilities_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_Liabilities_1" xml:lang="en-US" id="label_Liabilities_1">Liabilities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="Liabilities" xlink:to="label_Liabilities_1" xlink:title="Label : Liabilities to label_Liabilities_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockholdersEquityAbstract" xlink:label="StockholdersEquityAbstract" xlink:title="StockholdersEquityAbstract" />
    <link:label xlink:type="resource" xlink:label="label_StockholdersEquityAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_StockholdersEquityAbstract" xml:lang="en-US" id="label_StockholdersEquityAbstract">Stockholders' Equity Attributable to Parent [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockholdersEquityAbstract" xlink:to="label_StockholdersEquityAbstract" xlink:title="Label : StockholdersEquityAbstract to label_StockholdersEquityAbstract" />
    <link:label xlink:type="resource" xlink:label="label_StockholdersEquityAbstract_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_StockholdersEquityAbstract_1" xml:lang="en-US" id="label_StockholdersEquityAbstract_1">Stockholders&#x2019; equity:</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockholdersEquityAbstract" xlink:to="label_StockholdersEquityAbstract_1" xlink:title="Label : StockholdersEquityAbstract to label_StockholdersEquityAbstract_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AdditionalPaidInCapitalCommonStock" xlink:label="AdditionalPaidInCapitalCommonStock" xlink:title="AdditionalPaidInCapitalCommonStock" />
    <link:label xlink:type="resource" xlink:label="label_AdditionalPaidInCapitalCommonStock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_AdditionalPaidInCapitalCommonStock" xml:lang="en-US" id="label_AdditionalPaidInCapitalCommonStock">Additional paid-in capital</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AdditionalPaidInCapitalCommonStock" xlink:to="label_AdditionalPaidInCapitalCommonStock" xlink:title="Label : AdditionalPaidInCapitalCommonStock to label_AdditionalPaidInCapitalCommonStock" />
    <link:label xlink:type="resource" xlink:label="label_AdditionalPaidInCapitalCommonStock_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AdditionalPaidInCapitalCommonStock_1" xml:lang="en-US" id="label_AdditionalPaidInCapitalCommonStock_1">Additional Paid in Capital, Common Stock</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AdditionalPaidInCapitalCommonStock" xlink:to="label_AdditionalPaidInCapitalCommonStock_1" xlink:title="Label : AdditionalPaidInCapitalCommonStock to label_AdditionalPaidInCapitalCommonStock_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax" xlink:label="AccumulatedOtherComprehensiveIncomeLossNetOfTax" xlink:title="AccumulatedOtherComprehensiveIncomeLossNetOfTax" />
    <link:label xlink:type="resource" xlink:label="label_AccumulatedOtherComprehensiveIncomeLossNetOfTax" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_AccumulatedOtherComprehensiveIncomeLossNetOfTax" xml:lang="en-US" id="label_AccumulatedOtherComprehensiveIncomeLossNetOfTax">Accumulated other comprehensive income</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AccumulatedOtherComprehensiveIncomeLossNetOfTax" xlink:to="label_AccumulatedOtherComprehensiveIncomeLossNetOfTax" xlink:title="Label : AccumulatedOtherComprehensiveIncomeLossNetOfTax to label_AccumulatedOtherComprehensiveIncomeLossNetOfTax" />
    <link:label xlink:type="resource" xlink:label="label_AccumulatedOtherComprehensiveIncomeLossNetOfTax_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AccumulatedOtherComprehensiveIncomeLossNetOfTax_1" xml:lang="en-US" id="label_AccumulatedOtherComprehensiveIncomeLossNetOfTax_1">Accumulated Other Comprehensive Income (Loss), Net of Tax</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AccumulatedOtherComprehensiveIncomeLossNetOfTax" xlink:to="label_AccumulatedOtherComprehensiveIncomeLossNetOfTax_1" xlink:title="Label : AccumulatedOtherComprehensiveIncomeLossNetOfTax to label_AccumulatedOtherComprehensiveIncomeLossNetOfTax_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RetainedEarningsAccumulatedDeficit" xlink:label="RetainedEarningsAccumulatedDeficit" xlink:title="RetainedEarningsAccumulatedDeficit" />
    <link:label xlink:type="resource" xlink:label="label_RetainedEarningsAccumulatedDeficit" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_RetainedEarningsAccumulatedDeficit" xml:lang="en-US" id="label_RetainedEarningsAccumulatedDeficit">Accumulated deficit</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RetainedEarningsAccumulatedDeficit" xlink:to="label_RetainedEarningsAccumulatedDeficit" xlink:title="Label : RetainedEarningsAccumulatedDeficit to label_RetainedEarningsAccumulatedDeficit" />
    <link:label xlink:type="resource" xlink:label="label_RetainedEarningsAccumulatedDeficit_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_RetainedEarningsAccumulatedDeficit_1" xml:lang="en-US" id="label_RetainedEarningsAccumulatedDeficit_1">Retained Earnings (Accumulated Deficit)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RetainedEarningsAccumulatedDeficit" xlink:to="label_RetainedEarningsAccumulatedDeficit_1" xlink:title="Label : RetainedEarningsAccumulatedDeficit to label_RetainedEarningsAccumulatedDeficit_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LiabilitiesAndStockholdersEquity" xlink:label="LiabilitiesAndStockholdersEquity" xlink:title="LiabilitiesAndStockholdersEquity" />
    <link:label xlink:type="resource" xlink:label="label_LiabilitiesAndStockholdersEquity" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_LiabilitiesAndStockholdersEquity" xml:lang="en-US" id="label_LiabilitiesAndStockholdersEquity">Liabilities and Equity</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LiabilitiesAndStockholdersEquity" xlink:to="label_LiabilitiesAndStockholdersEquity" xlink:title="Label : LiabilitiesAndStockholdersEquity to label_LiabilitiesAndStockholdersEquity" />
    <link:label xlink:type="resource" xlink:label="label_LiabilitiesAndStockholdersEquity_1" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="label_LiabilitiesAndStockholdersEquity_1" xml:lang="en-US" id="label_LiabilitiesAndStockholdersEquity_1">Total liabilities and stockholders&#x2019; equity</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LiabilitiesAndStockholdersEquity" xlink:to="label_LiabilitiesAndStockholdersEquity_1" xlink:title="Label : LiabilitiesAndStockholdersEquity to label_LiabilitiesAndStockholdersEquity_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment" xlink:label="AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment" xlink:title="AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment" />
    <link:label xlink:type="resource" xlink:label="label_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment" xml:lang="en-US" id="label_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment">Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment" xlink:to="label_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment" xlink:title="Label : AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment to label_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment" />
    <link:label xlink:type="resource" xlink:label="label_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_1" xml:lang="en-US" id="label_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_1">Property and equipment, accumulated depreciation</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment" xlink:to="label_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_1" xlink:title="Label : AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment to label_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommonStockSharesAuthorized" xlink:label="CommonStockSharesAuthorized" xlink:title="CommonStockSharesAuthorized" />
    <link:label xlink:type="resource" xlink:label="label_CommonStockSharesAuthorized" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_CommonStockSharesAuthorized" xml:lang="en-US" id="label_CommonStockSharesAuthorized">Common stock, shares authorized</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CommonStockSharesAuthorized" xlink:to="label_CommonStockSharesAuthorized" xlink:title="Label : CommonStockSharesAuthorized to label_CommonStockSharesAuthorized" />
    <link:label xlink:type="resource" xlink:label="label_CommonStockSharesAuthorized_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CommonStockSharesAuthorized_1" xml:lang="en-US" id="label_CommonStockSharesAuthorized_1">Common Stock, Shares Authorized</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CommonStockSharesAuthorized" xlink:to="label_CommonStockSharesAuthorized_1" xlink:title="Label : CommonStockSharesAuthorized to label_CommonStockSharesAuthorized_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommonStockSharesIssued" xlink:label="CommonStockSharesIssued" xlink:title="CommonStockSharesIssued" />
    <link:label xlink:type="resource" xlink:label="label_CommonStockSharesIssued" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CommonStockSharesIssued" xml:lang="en-US" id="label_CommonStockSharesIssued">Common Stock, Shares, Issued</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CommonStockSharesIssued" xlink:to="label_CommonStockSharesIssued" xlink:title="Label : CommonStockSharesIssued to label_CommonStockSharesIssued" />
    <link:label xlink:type="resource" xlink:label="label_CommonStockSharesIssued_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_CommonStockSharesIssued_1" xml:lang="en-US" id="label_CommonStockSharesIssued_1">Common stock, shares issued</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CommonStockSharesIssued" xlink:to="label_CommonStockSharesIssued_1" xlink:title="Label : CommonStockSharesIssued to label_CommonStockSharesIssued_1" />
    <link:label xlink:type="resource" xlink:label="label_CommonStockSharesIssued_2" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="label_CommonStockSharesIssued_2" xml:lang="en-US" id="label_CommonStockSharesIssued_2">Common stock shares issued (in Shares)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CommonStockSharesIssued" xlink:to="label_CommonStockSharesIssued_2" xlink:title="Label : CommonStockSharesIssued to label_CommonStockSharesIssued_2" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommonStockSharesOutstanding" xlink:label="CommonStockSharesOutstanding" xlink:title="CommonStockSharesOutstanding" />
    <link:label xlink:type="resource" xlink:label="label_CommonStockSharesOutstanding" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_CommonStockSharesOutstanding" xml:lang="en-US" id="label_CommonStockSharesOutstanding">Common stock, shares outstanding</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CommonStockSharesOutstanding" xlink:to="label_CommonStockSharesOutstanding" xlink:title="Label : CommonStockSharesOutstanding to label_CommonStockSharesOutstanding" />
    <link:label xlink:type="resource" xlink:label="label_CommonStockSharesOutstanding_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CommonStockSharesOutstanding_1" xml:lang="en-US" id="label_CommonStockSharesOutstanding_1">Common Stock, Shares, Outstanding</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CommonStockSharesOutstanding" xlink:to="label_CommonStockSharesOutstanding_1" xlink:title="Label : CommonStockSharesOutstanding to label_CommonStockSharesOutstanding_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract" xlink:label="StatementOfIncomeAndComprehensiveIncomeAbstract" xlink:title="StatementOfIncomeAndComprehensiveIncomeAbstract" />
    <link:label xlink:type="resource" xlink:label="label_StatementOfIncomeAndComprehensiveIncomeAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_StatementOfIncomeAndComprehensiveIncomeAbstract" xml:lang="en-US" id="label_StatementOfIncomeAndComprehensiveIncomeAbstract">Statement of Comprehensive Income [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StatementOfIncomeAndComprehensiveIncomeAbstract" xlink:to="label_StatementOfIncomeAndComprehensiveIncomeAbstract" xlink:title="Label : StatementOfIncomeAndComprehensiveIncomeAbstract to label_StatementOfIncomeAndComprehensiveIncomeAbstract" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Revenues" xlink:label="Revenues" xlink:title="Revenues" />
    <link:label xlink:type="resource" xlink:label="label_Revenues" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_Revenues" xml:lang="en-US" id="label_Revenues">Revenue</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="Revenues" xlink:to="label_Revenues" xlink:title="Label : Revenues to label_Revenues" />
    <link:label xlink:type="resource" xlink:label="label_Revenues_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_Revenues_1" xml:lang="en-US" id="label_Revenues_1">Revenues</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="Revenues" xlink:to="label_Revenues_1" xlink:title="Label : Revenues to label_Revenues_1" />
    <link:label xlink:type="resource" xlink:label="label_Revenues_2" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:title="label_Revenues_2" xml:lang="en-US" id="label_Revenues_2">Revenue</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="Revenues" xlink:to="label_Revenues_2" xlink:title="Label : Revenues to label_Revenues_2" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingExpensesAbstract" xlink:label="OperatingExpensesAbstract" xlink:title="OperatingExpensesAbstract" />
    <link:label xlink:type="resource" xlink:label="label_OperatingExpensesAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_OperatingExpensesAbstract" xml:lang="en-US" id="label_OperatingExpensesAbstract">Operating Expenses [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OperatingExpensesAbstract" xlink:to="label_OperatingExpensesAbstract" xlink:title="Label : OperatingExpensesAbstract to label_OperatingExpensesAbstract" />
    <link:label xlink:type="resource" xlink:label="label_OperatingExpensesAbstract_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_OperatingExpensesAbstract_1" xml:lang="en-US" id="label_OperatingExpensesAbstract_1">Operating expenses:</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OperatingExpensesAbstract" xlink:to="label_OperatingExpensesAbstract_1" xlink:title="Label : OperatingExpensesAbstract to label_OperatingExpensesAbstract_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization" xlink:label="CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization" xlink:title="CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization" />
    <link:label xlink:type="resource" xlink:label="label_CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization" xml:lang="en-US" id="label_CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization">Cost of Goods and Service, Excluding Depreciation, Depletion, and Amortization</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization" xlink:to="label_CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization" xlink:title="Label : CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization to label_CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization" />
    <link:label xlink:type="resource" xlink:label="label_CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization_1" xml:lang="en-US" id="label_CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization_1">Cost of goods sold (exclusive of depreciation and amortization)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization" xlink:to="label_CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization_1" xlink:title="Label : CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization to label_CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ResearchAndDevelopmentExpense" xlink:label="ResearchAndDevelopmentExpense" xlink:title="ResearchAndDevelopmentExpense" />
    <link:label xlink:type="resource" xlink:label="label_ResearchAndDevelopmentExpense" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ResearchAndDevelopmentExpense" xml:lang="en-US" id="label_ResearchAndDevelopmentExpense">Research and Development Expense</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ResearchAndDevelopmentExpense" xlink:to="label_ResearchAndDevelopmentExpense" xlink:title="Label : ResearchAndDevelopmentExpense to label_ResearchAndDevelopmentExpense" />
    <link:label xlink:type="resource" xlink:label="label_ResearchAndDevelopmentExpense_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ResearchAndDevelopmentExpense_1" xml:lang="en-US" id="label_ResearchAndDevelopmentExpense_1">Research and development</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ResearchAndDevelopmentExpense" xlink:to="label_ResearchAndDevelopmentExpense_1" xlink:title="Label : ResearchAndDevelopmentExpense to label_ResearchAndDevelopmentExpense_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DepreciationDepletionAndAmortization" xlink:label="DepreciationDepletionAndAmortization" xlink:title="DepreciationDepletionAndAmortization" />
    <link:label xlink:type="resource" xlink:label="label_DepreciationDepletionAndAmortization" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DepreciationDepletionAndAmortization" xml:lang="en-US" id="label_DepreciationDepletionAndAmortization">Depreciation, Depletion and Amortization</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DepreciationDepletionAndAmortization" xlink:to="label_DepreciationDepletionAndAmortization" xlink:title="Label : DepreciationDepletionAndAmortization to label_DepreciationDepletionAndAmortization" />
    <link:label xlink:type="resource" xlink:label="label_DepreciationDepletionAndAmortization_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_DepreciationDepletionAndAmortization_1" xml:lang="en-US" id="label_DepreciationDepletionAndAmortization_1">Depreciation and amortization</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DepreciationDepletionAndAmortization" xlink:to="label_DepreciationDepletionAndAmortization_1" xlink:title="Label : DepreciationDepletionAndAmortization to label_DepreciationDepletionAndAmortization_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CostsAndExpenses" xlink:label="CostsAndExpenses" xlink:title="CostsAndExpenses" />
    <link:label xlink:type="resource" xlink:label="label_CostsAndExpenses" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="label_CostsAndExpenses" xml:lang="en-US" id="label_CostsAndExpenses">Total operating expenses</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CostsAndExpenses" xlink:to="label_CostsAndExpenses" xlink:title="Label : CostsAndExpenses to label_CostsAndExpenses" />
    <link:label xlink:type="resource" xlink:label="label_CostsAndExpenses_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CostsAndExpenses_1" xml:lang="en-US" id="label_CostsAndExpenses_1">Costs and Expenses</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CostsAndExpenses" xlink:to="label_CostsAndExpenses_1" xlink:title="Label : CostsAndExpenses to label_CostsAndExpenses_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingIncomeLoss" xlink:label="OperatingIncomeLoss" xlink:title="OperatingIncomeLoss" />
    <link:label xlink:type="resource" xlink:label="label_OperatingIncomeLoss" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_OperatingIncomeLoss" xml:lang="en-US" id="label_OperatingIncomeLoss">Operating Income (Loss)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OperatingIncomeLoss" xlink:to="label_OperatingIncomeLoss" xlink:title="Label : OperatingIncomeLoss to label_OperatingIncomeLoss" />
    <link:label xlink:type="resource" xlink:label="label_OperatingIncomeLoss_1" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="label_OperatingIncomeLoss_1" xml:lang="en-US" id="label_OperatingIncomeLoss_1">Operating loss</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OperatingIncomeLoss" xlink:to="label_OperatingIncomeLoss_1" xlink:title="Label : OperatingIncomeLoss to label_OperatingIncomeLoss_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherNonoperatingIncomeExpenseAbstract" xlink:label="OtherNonoperatingIncomeExpenseAbstract" xlink:title="OtherNonoperatingIncomeExpenseAbstract" />
    <link:label xlink:type="resource" xlink:label="label_OtherNonoperatingIncomeExpenseAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_OtherNonoperatingIncomeExpenseAbstract" xml:lang="en-US" id="label_OtherNonoperatingIncomeExpenseAbstract">Other income (expense):</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OtherNonoperatingIncomeExpenseAbstract" xlink:to="label_OtherNonoperatingIncomeExpenseAbstract" xlink:title="Label : OtherNonoperatingIncomeExpenseAbstract to label_OtherNonoperatingIncomeExpenseAbstract" />
    <link:label xlink:type="resource" xlink:label="label_OtherNonoperatingIncomeExpenseAbstract_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_OtherNonoperatingIncomeExpenseAbstract_1" xml:lang="en-US" id="label_OtherNonoperatingIncomeExpenseAbstract_1">Other Nonoperating Income (Expense) [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OtherNonoperatingIncomeExpenseAbstract" xlink:to="label_OtherNonoperatingIncomeExpenseAbstract_1" xlink:title="Label : OtherNonoperatingIncomeExpenseAbstract to label_OtherNonoperatingIncomeExpenseAbstract_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InterestIncomeExpenseNonoperatingNet" xlink:label="InterestIncomeExpenseNonoperatingNet" xlink:title="InterestIncomeExpenseNonoperatingNet" />
    <link:label xlink:type="resource" xlink:label="label_InterestIncomeExpenseNonoperatingNet" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_InterestIncomeExpenseNonoperatingNet" xml:lang="en-US" id="label_InterestIncomeExpenseNonoperatingNet">Interest expense, net</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InterestIncomeExpenseNonoperatingNet" xlink:to="label_InterestIncomeExpenseNonoperatingNet" xlink:title="Label : InterestIncomeExpenseNonoperatingNet to label_InterestIncomeExpenseNonoperatingNet" />
    <link:label xlink:type="resource" xlink:label="label_InterestIncomeExpenseNonoperatingNet_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_InterestIncomeExpenseNonoperatingNet_1" xml:lang="en-US" id="label_InterestIncomeExpenseNonoperatingNet_1">Interest Income (Expense), Nonoperating</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InterestIncomeExpenseNonoperatingNet" xlink:to="label_InterestIncomeExpenseNonoperatingNet_1" xlink:title="Label : InterestIncomeExpenseNonoperatingNet to label_InterestIncomeExpenseNonoperatingNet_1" />
    <link:label xlink:type="resource" xlink:label="label_InterestIncomeExpenseNonoperatingNet_2" xlink:role="http://www.xbrl.org/2009/role/negatedTotalLabel" xlink:title="label_InterestIncomeExpenseNonoperatingNet_2" xml:lang="en-US" id="label_InterestIncomeExpenseNonoperatingNet_2">Interest expense, net</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InterestIncomeExpenseNonoperatingNet" xlink:to="label_InterestIncomeExpenseNonoperatingNet_2" xlink:title="Label : InterestIncomeExpenseNonoperatingNet to label_InterestIncomeExpenseNonoperatingNet_2" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_LossOnExtinguishmentOfDebt" xlink:label="LossOnExtinguishmentOfDebt" xlink:title="LossOnExtinguishmentOfDebt" />
    <link:label xlink:type="resource" xlink:label="label_LossOnExtinguishmentOfDebt" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_LossOnExtinguishmentOfDebt" xml:lang="en-US" id="label_LossOnExtinguishmentOfDebt">Loss on Extinguishment of Debt</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LossOnExtinguishmentOfDebt" xlink:to="label_LossOnExtinguishmentOfDebt" xlink:title="Label : LossOnExtinguishmentOfDebt to label_LossOnExtinguishmentOfDebt" />
    <link:label xlink:type="resource" xlink:label="label_LossOnExtinguishmentOfDebt_1" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:title="label_LossOnExtinguishmentOfDebt_1" xml:lang="en-US" id="label_LossOnExtinguishmentOfDebt_1">Debt extinguishment loss</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LossOnExtinguishmentOfDebt" xlink:to="label_LossOnExtinguishmentOfDebt_1" xlink:title="Label : LossOnExtinguishmentOfDebt to label_LossOnExtinguishmentOfDebt_1" />
    <link:label xlink:type="resource" xlink:label="label_LossOnExtinguishmentOfDebt_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_LossOnExtinguishmentOfDebt_2" xml:lang="en-US" id="label_LossOnExtinguishmentOfDebt_2">The amount of loss on extinguishment of debt prior to maturity.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LossOnExtinguishmentOfDebt" xlink:to="label_LossOnExtinguishmentOfDebt_2" xlink:title="Label : LossOnExtinguishmentOfDebt to label_LossOnExtinguishmentOfDebt_2" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent" xlink:label="OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent" xlink:title="OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent" />
    <link:label xlink:type="resource" xlink:label="label_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent" xml:lang="en-US" id="label_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent">Foreign currency translation adjustment</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent" xlink:to="label_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent" xlink:title="Label : OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent to label_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent" />
    <link:label xlink:type="resource" xlink:label="label_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent_1" xml:lang="en-US" id="label_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent_1">Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Parent</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent" xlink:to="label_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent_1" xlink:title="Label : OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent to label_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementOfStockholdersEquityAbstract" xlink:label="StatementOfStockholdersEquityAbstract" xlink:title="StatementOfStockholdersEquityAbstract" />
    <link:label xlink:type="resource" xlink:label="label_StatementOfStockholdersEquityAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_StatementOfStockholdersEquityAbstract" xml:lang="en-US" id="label_StatementOfStockholdersEquityAbstract">Statement of Stockholders' Equity [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StatementOfStockholdersEquityAbstract" xlink:to="label_StatementOfStockholdersEquityAbstract" xlink:title="Label : StatementOfStockholdersEquityAbstract to label_StatementOfStockholdersEquityAbstract" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementTable" xlink:label="StatementTable" xlink:title="StatementTable" />
    <link:label xlink:type="resource" xlink:label="label_StatementTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_StatementTable" xml:lang="en-US" id="label_StatementTable">Statement [Table]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StatementTable" xlink:to="label_StatementTable" xlink:title="Label : StatementTable to label_StatementTable" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementEquityComponentsAxis" xlink:label="StatementEquityComponentsAxis" xlink:title="StatementEquityComponentsAxis" />
    <link:label xlink:type="resource" xlink:label="label_StatementEquityComponentsAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_StatementEquityComponentsAxis" xml:lang="en-US" id="label_StatementEquityComponentsAxis">Equity Components [Axis]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StatementEquityComponentsAxis" xlink:to="label_StatementEquityComponentsAxis" xlink:title="Label : StatementEquityComponentsAxis to label_StatementEquityComponentsAxis" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EquityComponentDomain" xlink:label="EquityComponentDomain" xlink:title="EquityComponentDomain" />
    <link:label xlink:type="resource" xlink:label="label_EquityComponentDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_EquityComponentDomain" xml:lang="en-US" id="label_EquityComponentDomain">Equity Component [Domain]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EquityComponentDomain" xlink:to="label_EquityComponentDomain" xlink:title="Label : EquityComponentDomain to label_EquityComponentDomain" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AdditionalPaidInCapitalMember" xlink:label="AdditionalPaidInCapitalMember" xlink:title="AdditionalPaidInCapitalMember" />
    <link:label xlink:type="resource" xlink:label="label_AdditionalPaidInCapitalMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AdditionalPaidInCapitalMember" xml:lang="en-US" id="label_AdditionalPaidInCapitalMember">Additional Paid-in Capital [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AdditionalPaidInCapitalMember" xlink:to="label_AdditionalPaidInCapitalMember" xlink:title="Label : AdditionalPaidInCapitalMember to label_AdditionalPaidInCapitalMember" />
    <link:label xlink:type="resource" xlink:label="label_AdditionalPaidInCapitalMember_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_AdditionalPaidInCapitalMember_1" xml:lang="en-US" id="label_AdditionalPaidInCapitalMember_1">Additional Paid-In Capital</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AdditionalPaidInCapitalMember" xlink:to="label_AdditionalPaidInCapitalMember_1" xlink:title="Label : AdditionalPaidInCapitalMember to label_AdditionalPaidInCapitalMember_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RetainedEarningsMember" xlink:label="RetainedEarningsMember" xlink:title="RetainedEarningsMember" />
    <link:label xlink:type="resource" xlink:label="label_RetainedEarningsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_RetainedEarningsMember" xml:lang="en-US" id="label_RetainedEarningsMember">Accumulated Deficit</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RetainedEarningsMember" xlink:to="label_RetainedEarningsMember" xlink:title="Label : RetainedEarningsMember to label_RetainedEarningsMember" />
    <link:label xlink:type="resource" xlink:label="label_RetainedEarningsMember_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_RetainedEarningsMember_1" xml:lang="en-US" id="label_RetainedEarningsMember_1">Retained Earnings [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RetainedEarningsMember" xlink:to="label_RetainedEarningsMember_1" xlink:title="Label : RetainedEarningsMember to label_RetainedEarningsMember_1" />
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    <link:label xlink:type="resource" xlink:label="label_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_3" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:title="label_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_3" xml:lang="en-US" id="label_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_3">Balance</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:to="label_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_3" xlink:title="Label : StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest to label_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_3" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SharesOutstanding" xlink:label="SharesOutstanding" xlink:title="SharesOutstanding" />
    <link:label xlink:type="resource" xlink:label="label_SharesOutstanding" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:title="label_SharesOutstanding" xml:lang="en-US" id="label_SharesOutstanding">Balance (in Shares)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SharesOutstanding" xlink:to="label_SharesOutstanding" xlink:title="Label : SharesOutstanding to label_SharesOutstanding" />
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    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensation" xlink:label="ShareBasedCompensation" xlink:title="ShareBasedCompensation" />
    <link:label xlink:type="resource" xlink:label="label_ShareBasedCompensation" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ShareBasedCompensation" xml:lang="en-US" id="label_ShareBasedCompensation">Equity-based compensation</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ShareBasedCompensation" xlink:to="label_ShareBasedCompensation" xlink:title="Label : ShareBasedCompensation to label_ShareBasedCompensation" />
    <link:label xlink:type="resource" xlink:label="label_ShareBasedCompensation_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ShareBasedCompensation_1" xml:lang="en-US" id="label_ShareBasedCompensation_1">Share-Based Payment Arrangement, Noncash Expense</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ShareBasedCompensation" xlink:to="label_ShareBasedCompensation_1" xlink:title="Label : ShareBasedCompensation to label_ShareBasedCompensation_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GainsLossesOnExtinguishmentOfDebt" xlink:label="GainsLossesOnExtinguishmentOfDebt" xlink:title="GainsLossesOnExtinguishmentOfDebt" />
    <link:label xlink:type="resource" xlink:label="label_GainsLossesOnExtinguishmentOfDebt" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_GainsLossesOnExtinguishmentOfDebt" xml:lang="en-US" id="label_GainsLossesOnExtinguishmentOfDebt">Gain (Loss) on Extinguishment of Debt</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="GainsLossesOnExtinguishmentOfDebt" xlink:to="label_GainsLossesOnExtinguishmentOfDebt" xlink:title="Label : GainsLossesOnExtinguishmentOfDebt to label_GainsLossesOnExtinguishmentOfDebt" />
    <link:label xlink:type="resource" xlink:label="label_GainsLossesOnExtinguishmentOfDebt_1" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:title="label_GainsLossesOnExtinguishmentOfDebt_1" xml:lang="en-US" id="label_GainsLossesOnExtinguishmentOfDebt_1">Debt extinguishment loss</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="GainsLossesOnExtinguishmentOfDebt" xlink:to="label_GainsLossesOnExtinguishmentOfDebt_1" xlink:title="Label : GainsLossesOnExtinguishmentOfDebt to label_GainsLossesOnExtinguishmentOfDebt_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AdjustmentOfWarrantsGrantedForServices" xlink:label="AdjustmentOfWarrantsGrantedForServices" xlink:title="AdjustmentOfWarrantsGrantedForServices" />
    <link:label xlink:type="resource" xlink:label="label_AdjustmentOfWarrantsGrantedForServices" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AdjustmentOfWarrantsGrantedForServices" xml:lang="en-US" id="label_AdjustmentOfWarrantsGrantedForServices">Adjustment of Warrants Granted for Services</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AdjustmentOfWarrantsGrantedForServices" xlink:to="label_AdjustmentOfWarrantsGrantedForServices" xlink:title="Label : AdjustmentOfWarrantsGrantedForServices to label_AdjustmentOfWarrantsGrantedForServices" />
    <link:label xlink:type="resource" xlink:label="label_AdjustmentOfWarrantsGrantedForServices_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_AdjustmentOfWarrantsGrantedForServices_1" xml:lang="en-US" id="label_AdjustmentOfWarrantsGrantedForServices_1">Issuance of common warrants</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AdjustmentOfWarrantsGrantedForServices" xlink:to="label_AdjustmentOfWarrantsGrantedForServices_1" xlink:title="Label : AdjustmentOfWarrantsGrantedForServices to label_AdjustmentOfWarrantsGrantedForServices_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GainLossOnInvestments" xlink:label="GainLossOnInvestments" xlink:title="GainLossOnInvestments" />
    <link:label xlink:type="resource" xlink:label="label_GainLossOnInvestments" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_GainLossOnInvestments" xml:lang="en-US" id="label_GainLossOnInvestments">Gain (Loss) on Investments</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="GainLossOnInvestments" xlink:to="label_GainLossOnInvestments" xlink:title="Label : GainLossOnInvestments to label_GainLossOnInvestments" />
    <link:label xlink:type="resource" xlink:label="label_GainLossOnInvestments_1" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:title="label_GainLossOnInvestments_1" xml:lang="en-US" id="label_GainLossOnInvestments_1">Realized and unrealized gain on short term investments</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="GainLossOnInvestments" xlink:to="label_GainLossOnInvestments_1" xlink:title="Label : GainLossOnInvestments to label_GainLossOnInvestments_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeLossFromEquityMethodInvestments" xlink:label="IncomeLossFromEquityMethodInvestments" xlink:title="IncomeLossFromEquityMethodInvestments" />
    <link:label xlink:type="resource" xlink:label="label_IncomeLossFromEquityMethodInvestments" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:title="label_IncomeLossFromEquityMethodInvestments" xml:lang="en-US" id="label_IncomeLossFromEquityMethodInvestments">Equity method investment loss</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncomeLossFromEquityMethodInvestments" xlink:to="label_IncomeLossFromEquityMethodInvestments" xlink:title="Label : IncomeLossFromEquityMethodInvestments to label_IncomeLossFromEquityMethodInvestments" />
    <link:label xlink:type="resource" xlink:label="label_IncomeLossFromEquityMethodInvestments_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_IncomeLossFromEquityMethodInvestments_1" xml:lang="en-US" id="label_IncomeLossFromEquityMethodInvestments_1">Income (Loss) from Equity Method Investments</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncomeLossFromEquityMethodInvestments" xlink:to="label_IncomeLossFromEquityMethodInvestments_1" xlink:title="Label : IncomeLossFromEquityMethodInvestments to label_IncomeLossFromEquityMethodInvestments_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetRetirementObligationAccretionExpense" xlink:label="AssetRetirementObligationAccretionExpense" xlink:title="AssetRetirementObligationAccretionExpense" />
    <link:label xlink:type="resource" xlink:label="label_AssetRetirementObligationAccretionExpense" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AssetRetirementObligationAccretionExpense" xml:lang="en-US" id="label_AssetRetirementObligationAccretionExpense">Asset Retirement Obligation, Accretion Expense</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AssetRetirementObligationAccretionExpense" xlink:to="label_AssetRetirementObligationAccretionExpense" xlink:title="Label : AssetRetirementObligationAccretionExpense to label_AssetRetirementObligationAccretionExpense" />
    <link:label xlink:type="resource" xlink:label="label_AssetRetirementObligationAccretionExpense_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_AssetRetirementObligationAccretionExpense_1" xml:lang="en-US" id="label_AssetRetirementObligationAccretionExpense_1">Asset retirement obligation accretion</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AssetRetirementObligationAccretionExpense" xlink:to="label_AssetRetirementObligationAccretionExpense_1" xlink:title="Label : AssetRetirementObligationAccretionExpense to label_AssetRetirementObligationAccretionExpense_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AmortizationOfFinancingCostsAndDiscounts" xlink:label="AmortizationOfFinancingCostsAndDiscounts" xlink:title="AmortizationOfFinancingCostsAndDiscounts" />
    <link:label xlink:type="resource" xlink:label="label_AmortizationOfFinancingCostsAndDiscounts" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_AmortizationOfFinancingCostsAndDiscounts" xml:lang="en-US" id="label_AmortizationOfFinancingCostsAndDiscounts">Amortization of debt issuance costs and discount</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AmortizationOfFinancingCostsAndDiscounts" xlink:to="label_AmortizationOfFinancingCostsAndDiscounts" xlink:title="Label : AmortizationOfFinancingCostsAndDiscounts to label_AmortizationOfFinancingCostsAndDiscounts" />
    <link:label xlink:type="resource" xlink:label="label_AmortizationOfFinancingCostsAndDiscounts_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AmortizationOfFinancingCostsAndDiscounts_1" xml:lang="en-US" id="label_AmortizationOfFinancingCostsAndDiscounts_1">Amortization of Debt Issuance Costs and Discounts</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AmortizationOfFinancingCostsAndDiscounts" xlink:to="label_AmortizationOfFinancingCostsAndDiscounts_1" xlink:title="Label : AmortizationOfFinancingCostsAndDiscounts to label_AmortizationOfFinancingCostsAndDiscounts_1" />
    <link:label xlink:type="resource" xlink:label="label_AmortizationOfFinancingCostsAndDiscounts_2" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="label_AmortizationOfFinancingCostsAndDiscounts_2" xml:lang="en-US" id="label_AmortizationOfFinancingCostsAndDiscounts_2">Amortization of debt discount</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AmortizationOfFinancingCostsAndDiscounts" xlink:to="label_AmortizationOfFinancingCostsAndDiscounts_2" xlink:title="Label : AmortizationOfFinancingCostsAndDiscounts to label_AmortizationOfFinancingCostsAndDiscounts_2" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInOperatingCapitalAbstract" xlink:label="IncreaseDecreaseInOperatingCapitalAbstract" xlink:title="IncreaseDecreaseInOperatingCapitalAbstract" />
    <link:label xlink:type="resource" xlink:label="label_IncreaseDecreaseInOperatingCapitalAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_IncreaseDecreaseInOperatingCapitalAbstract" xml:lang="en-US" id="label_IncreaseDecreaseInOperatingCapitalAbstract">Changes in operating assets and liabilities:</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncreaseDecreaseInOperatingCapitalAbstract" xlink:to="label_IncreaseDecreaseInOperatingCapitalAbstract" xlink:title="Label : IncreaseDecreaseInOperatingCapitalAbstract to label_IncreaseDecreaseInOperatingCapitalAbstract" />
    <link:label xlink:type="resource" xlink:label="label_IncreaseDecreaseInOperatingCapitalAbstract_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_IncreaseDecreaseInOperatingCapitalAbstract_1" xml:lang="en-US" id="label_IncreaseDecreaseInOperatingCapitalAbstract_1">Increase (Decrease) in Operating Capital [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncreaseDecreaseInOperatingCapitalAbstract" xlink:to="label_IncreaseDecreaseInOperatingCapitalAbstract_1" xlink:title="Label : IncreaseDecreaseInOperatingCapitalAbstract to label_IncreaseDecreaseInOperatingCapitalAbstract_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInAccountsReceivable" xlink:label="IncreaseDecreaseInAccountsReceivable" xlink:title="IncreaseDecreaseInAccountsReceivable" />
    <link:label xlink:type="resource" xlink:label="label_IncreaseDecreaseInAccountsReceivable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_IncreaseDecreaseInAccountsReceivable" xml:lang="en-US" id="label_IncreaseDecreaseInAccountsReceivable">Increase (Decrease) in Accounts Receivable</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncreaseDecreaseInAccountsReceivable" xlink:to="label_IncreaseDecreaseInAccountsReceivable" xlink:title="Label : IncreaseDecreaseInAccountsReceivable to label_IncreaseDecreaseInAccountsReceivable" />
    <link:label xlink:type="resource" xlink:label="label_IncreaseDecreaseInAccountsReceivable_1" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:title="label_IncreaseDecreaseInAccountsReceivable_1" xml:lang="en-US" id="label_IncreaseDecreaseInAccountsReceivable_1">Accounts receivable</link:label>
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    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInOtherCurrentAssets" xlink:label="IncreaseDecreaseInOtherCurrentAssets" xlink:title="IncreaseDecreaseInOtherCurrentAssets" />
    <link:label xlink:type="resource" xlink:label="label_IncreaseDecreaseInOtherCurrentAssets" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_IncreaseDecreaseInOtherCurrentAssets" xml:lang="en-US" id="label_IncreaseDecreaseInOtherCurrentAssets">Increase (Decrease) in Other Current Assets</link:label>
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    <link:label xlink:type="resource" xlink:label="label_IncreaseDecreaseInOtherCurrentAssets_1" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:title="label_IncreaseDecreaseInOtherCurrentAssets_1" xml:lang="en-US" id="label_IncreaseDecreaseInOtherCurrentAssets_1">Other current assets</link:label>
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    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInOtherNoncurrentAssets" xlink:label="IncreaseDecreaseInOtherNoncurrentAssets" xlink:title="IncreaseDecreaseInOtherNoncurrentAssets" />
    <link:label xlink:type="resource" xlink:label="label_IncreaseDecreaseInOtherNoncurrentAssets" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:title="label_IncreaseDecreaseInOtherNoncurrentAssets" xml:lang="en-US" id="label_IncreaseDecreaseInOtherNoncurrentAssets">Other assets</link:label>
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    <link:label xlink:type="resource" xlink:label="label_IncreaseDecreaseInOtherNoncurrentAssets_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_IncreaseDecreaseInOtherNoncurrentAssets_1" xml:lang="en-US" id="label_IncreaseDecreaseInOtherNoncurrentAssets_1">Increase (Decrease) in Other Noncurrent Assets</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncreaseDecreaseInOtherNoncurrentAssets" xlink:to="label_IncreaseDecreaseInOtherNoncurrentAssets_1" xlink:title="Label : IncreaseDecreaseInOtherNoncurrentAssets to label_IncreaseDecreaseInOtherNoncurrentAssets_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInAccountsPayable" xlink:label="IncreaseDecreaseInAccountsPayable" xlink:title="IncreaseDecreaseInAccountsPayable" />
    <link:label xlink:type="resource" xlink:label="label_IncreaseDecreaseInAccountsPayable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_IncreaseDecreaseInAccountsPayable" xml:lang="en-US" id="label_IncreaseDecreaseInAccountsPayable">Accounts payable</link:label>
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    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInDeferredRevenue" xlink:label="IncreaseDecreaseInDeferredRevenue" xlink:title="IncreaseDecreaseInDeferredRevenue" />
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    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueDisclosuresAbstract" xlink:label="FairValueDisclosuresAbstract" xlink:title="FairValueDisclosuresAbstract" />
    <link:label xlink:type="resource" xlink:label="label_FairValueDisclosuresAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_FairValueDisclosuresAbstract" xml:lang="en-US" id="label_FairValueDisclosuresAbstract">Fair Value</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FairValueDisclosuresAbstract" xlink:to="label_FairValueDisclosuresAbstract" xlink:title="Label : FairValueDisclosuresAbstract to label_FairValueDisclosuresAbstract" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueDisclosuresTextBlock" xlink:label="FairValueDisclosuresTextBlock" xlink:title="FairValueDisclosuresTextBlock" />
    <link:label xlink:type="resource" xlink:label="label_FairValueDisclosuresTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_FairValueDisclosuresTextBlock" xml:lang="en-US" id="label_FairValueDisclosuresTextBlock">Fair Value Disclosures [Text Block]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FairValueDisclosuresTextBlock" xlink:to="label_FairValueDisclosuresTextBlock" xlink:title="Label : FairValueDisclosuresTextBlock to label_FairValueDisclosuresTextBlock" />
    <link:label xlink:type="resource" xlink:label="label_FairValueDisclosuresTextBlock_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_FairValueDisclosuresTextBlock_1" xml:lang="en-US" id="label_FairValueDisclosuresTextBlock_1">Fair Value</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FairValueDisclosuresTextBlock" xlink:to="label_FairValueDisclosuresTextBlock_1" xlink:title="Label : FairValueDisclosuresTextBlock to label_FairValueDisclosuresTextBlock_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtDisclosureAbstract" xlink:label="DebtDisclosureAbstract" xlink:title="DebtDisclosureAbstract" />
    <link:label xlink:type="resource" xlink:label="label_DebtDisclosureAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_DebtDisclosureAbstract" xml:lang="en-US" id="label_DebtDisclosureAbstract">Long term debt, net</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtDisclosureAbstract" xlink:to="label_DebtDisclosureAbstract" xlink:title="Label : DebtDisclosureAbstract to label_DebtDisclosureAbstract" />
    <link:label xlink:type="resource" xlink:label="label_DebtDisclosureAbstract_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DebtDisclosureAbstract_1" xml:lang="en-US" id="label_DebtDisclosureAbstract_1">Long term debt, net</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtDisclosureAbstract" xlink:to="label_DebtDisclosureAbstract_1" xlink:title="Label : DebtDisclosureAbstract to label_DebtDisclosureAbstract_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongTermDebtTextBlock" xlink:label="LongTermDebtTextBlock" xlink:title="LongTermDebtTextBlock" />
    <link:label xlink:type="resource" xlink:label="label_LongTermDebtTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_LongTermDebtTextBlock" xml:lang="en-US" id="label_LongTermDebtTextBlock">Long-Term Debt [Text Block]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LongTermDebtTextBlock" xlink:to="label_LongTermDebtTextBlock" xlink:title="Label : LongTermDebtTextBlock to label_LongTermDebtTextBlock" />
    <link:label xlink:type="resource" xlink:label="label_LongTermDebtTextBlock_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_LongTermDebtTextBlock_1" xml:lang="en-US" id="label_LongTermDebtTextBlock_1">Long term debt, net</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LongTermDebtTextBlock" xlink:to="label_LongTermDebtTextBlock_1" xlink:title="Label : LongTermDebtTextBlock to label_LongTermDebtTextBlock_1" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_WarrantsAndWarrantsLiabilityAbstract" xlink:label="WarrantsAndWarrantsLiabilityAbstract" xlink:title="WarrantsAndWarrantsLiabilityAbstract" />
    <link:label xlink:type="resource" xlink:label="label_WarrantsAndWarrantsLiabilityAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_WarrantsAndWarrantsLiabilityAbstract" xml:lang="en-US" id="label_WarrantsAndWarrantsLiabilityAbstract">Warrants and Warrant Liability</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WarrantsAndWarrantsLiabilityAbstract" xlink:to="label_WarrantsAndWarrantsLiabilityAbstract" xlink:title="Label : WarrantsAndWarrantsLiabilityAbstract to label_WarrantsAndWarrantsLiabilityAbstract" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_WarrantsAndWarrantsLiabilityTextBlock" xlink:label="WarrantsAndWarrantsLiabilityTextBlock" xlink:title="WarrantsAndWarrantsLiabilityTextBlock" />
    <link:label xlink:type="resource" xlink:label="label_WarrantsAndWarrantsLiabilityTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_WarrantsAndWarrantsLiabilityTextBlock" xml:lang="en-US" id="label_WarrantsAndWarrantsLiabilityTextBlock">WarrantsAndWarrantsLiabilityTextBlock</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WarrantsAndWarrantsLiabilityTextBlock" xlink:to="label_WarrantsAndWarrantsLiabilityTextBlock" xlink:title="Label : WarrantsAndWarrantsLiabilityTextBlock to label_WarrantsAndWarrantsLiabilityTextBlock" />
    <link:label xlink:type="resource" xlink:label="label_WarrantsAndWarrantsLiabilityTextBlock_1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_WarrantsAndWarrantsLiabilityTextBlock_1" xml:lang="en-US" id="label_WarrantsAndWarrantsLiabilityTextBlock_1">The entire disclosure for warrants and warrant Liability.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WarrantsAndWarrantsLiabilityTextBlock" xlink:to="label_WarrantsAndWarrantsLiabilityTextBlock_1" xlink:title="Label : WarrantsAndWarrantsLiabilityTextBlock to label_WarrantsAndWarrantsLiabilityTextBlock_1" />
    <link:label xlink:type="resource" xlink:label="label_WarrantsAndWarrantsLiabilityTextBlock_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_WarrantsAndWarrantsLiabilityTextBlock_2" xml:lang="en-US" id="label_WarrantsAndWarrantsLiabilityTextBlock_2">Warrants and Warrant Liability</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WarrantsAndWarrantsLiabilityTextBlock" xlink:to="label_WarrantsAndWarrantsLiabilityTextBlock_2" xlink:title="Label : WarrantsAndWarrantsLiabilityTextBlock to label_WarrantsAndWarrantsLiabilityTextBlock_2" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockholdersEquityNoteDisclosureTextBlock" xlink:label="StockholdersEquityNoteDisclosureTextBlock" xlink:title="StockholdersEquityNoteDisclosureTextBlock" />
    <link:label xlink:type="resource" xlink:label="label_StockholdersEquityNoteDisclosureTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_StockholdersEquityNoteDisclosureTextBlock" xml:lang="en-US" id="label_StockholdersEquityNoteDisclosureTextBlock">Stockholders' Equity Note Disclosure [Text Block]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockholdersEquityNoteDisclosureTextBlock" xlink:to="label_StockholdersEquityNoteDisclosureTextBlock" xlink:title="Label : StockholdersEquityNoteDisclosureTextBlock to label_StockholdersEquityNoteDisclosureTextBlock" />
    <link:label xlink:type="resource" xlink:label="label_StockholdersEquityNoteDisclosureTextBlock_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_StockholdersEquityNoteDisclosureTextBlock_1" xml:lang="en-US" id="label_StockholdersEquityNoteDisclosureTextBlock_1">Common Stock</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockholdersEquityNoteDisclosureTextBlock" xlink:to="label_StockholdersEquityNoteDisclosureTextBlock_1" xlink:title="Label : StockholdersEquityNoteDisclosureTextBlock to label_StockholdersEquityNoteDisclosureTextBlock_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommitmentsAndContingenciesDisclosureAbstract" xlink:label="CommitmentsAndContingenciesDisclosureAbstract" xlink:title="CommitmentsAndContingenciesDisclosureAbstract" />
    <link:label xlink:type="resource" xlink:label="label_CommitmentsAndContingenciesDisclosureAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CommitmentsAndContingenciesDisclosureAbstract" xml:lang="en-US" id="label_CommitmentsAndContingenciesDisclosureAbstract">Commitments and Contingencies</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CommitmentsAndContingenciesDisclosureAbstract" xlink:to="label_CommitmentsAndContingenciesDisclosureAbstract" xlink:title="Label : CommitmentsAndContingenciesDisclosureAbstract to label_CommitmentsAndContingenciesDisclosureAbstract" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommitmentsAndContingenciesDisclosureTextBlock" xlink:label="CommitmentsAndContingenciesDisclosureTextBlock" xlink:title="CommitmentsAndContingenciesDisclosureTextBlock" />
    <link:label xlink:type="resource" xlink:label="label_CommitmentsAndContingenciesDisclosureTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CommitmentsAndContingenciesDisclosureTextBlock" xml:lang="en-US" id="label_CommitmentsAndContingenciesDisclosureTextBlock">Commitments and Contingencies Disclosure [Text Block]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CommitmentsAndContingenciesDisclosureTextBlock" xlink:to="label_CommitmentsAndContingenciesDisclosureTextBlock" xlink:title="Label : CommitmentsAndContingenciesDisclosureTextBlock to label_CommitmentsAndContingenciesDisclosureTextBlock" />
    <link:label xlink:type="resource" xlink:label="label_CommitmentsAndContingenciesDisclosureTextBlock_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_CommitmentsAndContingenciesDisclosureTextBlock_1" xml:lang="en-US" id="label_CommitmentsAndContingenciesDisclosureTextBlock_1">Commitments and Contingencies</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CommitmentsAndContingenciesDisclosureTextBlock" xlink:to="label_CommitmentsAndContingenciesDisclosureTextBlock_1" xlink:title="Label : CommitmentsAndContingenciesDisclosureTextBlock to label_CommitmentsAndContingenciesDisclosureTextBlock_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxDisclosureAbstract" xlink:label="IncomeTaxDisclosureAbstract" xlink:title="IncomeTaxDisclosureAbstract" />
    <link:label xlink:type="resource" xlink:label="label_IncomeTaxDisclosureAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_IncomeTaxDisclosureAbstract" xml:lang="en-US" id="label_IncomeTaxDisclosureAbstract">Income Taxes</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncomeTaxDisclosureAbstract" xlink:to="label_IncomeTaxDisclosureAbstract" xlink:title="Label : IncomeTaxDisclosureAbstract to label_IncomeTaxDisclosureAbstract" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxDisclosureTextBlock" xlink:label="IncomeTaxDisclosureTextBlock" xlink:title="IncomeTaxDisclosureTextBlock" />
    <link:label xlink:type="resource" xlink:label="label_IncomeTaxDisclosureTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_IncomeTaxDisclosureTextBlock" xml:lang="en-US" id="label_IncomeTaxDisclosureTextBlock">Income Tax Disclosure [Text Block]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncomeTaxDisclosureTextBlock" xlink:to="label_IncomeTaxDisclosureTextBlock" xlink:title="Label : IncomeTaxDisclosureTextBlock to label_IncomeTaxDisclosureTextBlock" />
    <link:label xlink:type="resource" xlink:label="label_IncomeTaxDisclosureTextBlock_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_IncomeTaxDisclosureTextBlock_1" xml:lang="en-US" id="label_IncomeTaxDisclosureTextBlock_1">Income Taxes</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncomeTaxDisclosureTextBlock" xlink:to="label_IncomeTaxDisclosureTextBlock_1" xlink:title="Label : IncomeTaxDisclosureTextBlock to label_IncomeTaxDisclosureTextBlock_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SegmentReportingAbstract" xlink:label="SegmentReportingAbstract" xlink:title="SegmentReportingAbstract" />
    <link:label xlink:type="resource" xlink:label="label_SegmentReportingAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_SegmentReportingAbstract" xml:lang="en-US" id="label_SegmentReportingAbstract">Segments</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SegmentReportingAbstract" xlink:to="label_SegmentReportingAbstract" xlink:title="Label : SegmentReportingAbstract to label_SegmentReportingAbstract" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SegmentReportingDisclosureTextBlock" xlink:label="SegmentReportingDisclosureTextBlock" xlink:title="SegmentReportingDisclosureTextBlock" />
    <link:label xlink:type="resource" xlink:label="label_SegmentReportingDisclosureTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_SegmentReportingDisclosureTextBlock" xml:lang="en-US" id="label_SegmentReportingDisclosureTextBlock">Segments</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SegmentReportingDisclosureTextBlock" xlink:to="label_SegmentReportingDisclosureTextBlock" xlink:title="Label : SegmentReportingDisclosureTextBlock to label_SegmentReportingDisclosureTextBlock" />
    <link:label xlink:type="resource" xlink:label="label_SegmentReportingDisclosureTextBlock_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_SegmentReportingDisclosureTextBlock_1" xml:lang="en-US" id="label_SegmentReportingDisclosureTextBlock_1">Segment Reporting Disclosure [Text Block]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SegmentReportingDisclosureTextBlock" xlink:to="label_SegmentReportingDisclosureTextBlock_1" xlink:title="Label : SegmentReportingDisclosureTextBlock to label_SegmentReportingDisclosureTextBlock_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SubsequentEventsAbstract" xlink:label="SubsequentEventsAbstract" xlink:title="SubsequentEventsAbstract" />
    <link:label xlink:type="resource" xlink:label="label_SubsequentEventsAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_SubsequentEventsAbstract" xml:lang="en-US" id="label_SubsequentEventsAbstract">Subsequent Events</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SubsequentEventsAbstract" xlink:to="label_SubsequentEventsAbstract" xlink:title="Label : SubsequentEventsAbstract to label_SubsequentEventsAbstract" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SubsequentEventsTextBlock" xlink:label="SubsequentEventsTextBlock" xlink:title="SubsequentEventsTextBlock" />
    <link:label xlink:type="resource" xlink:label="label_SubsequentEventsTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_SubsequentEventsTextBlock" xml:lang="en-US" id="label_SubsequentEventsTextBlock">Subsequent Events [Text Block]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SubsequentEventsTextBlock" xlink:to="label_SubsequentEventsTextBlock" xlink:title="Label : SubsequentEventsTextBlock to label_SubsequentEventsTextBlock" />
    <link:label xlink:type="resource" xlink:label="label_SubsequentEventsTextBlock_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_SubsequentEventsTextBlock_1" xml:lang="en-US" id="label_SubsequentEventsTextBlock_1">Subsequent Events</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SubsequentEventsTextBlock" xlink:to="label_SubsequentEventsTextBlock_1" xlink:title="Label : SubsequentEventsTextBlock to label_SubsequentEventsTextBlock_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_AllIndividualsMember" xlink:label="AllIndividualsMember" xlink:title="AllIndividualsMember" />
    <link:label xlink:type="resource" xlink:label="label_AllIndividualsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_AllIndividualsMember" xml:lang="en-US" id="label_AllIndividualsMember">All Individuals</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AllIndividualsMember" xlink:to="label_AllIndividualsMember" xlink:title="Label : AllIndividualsMember to label_AllIndividualsMember" />
    <link:label xlink:type="resource" xlink:label="label_AllIndividualsMember_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AllIndividualsMember_1" xml:lang="en-US" id="label_AllIndividualsMember_1">All Individuals [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AllIndividualsMember" xlink:to="label_AllIndividualsMember_1" xlink:title="Label : AllIndividualsMember to label_AllIndividualsMember_1" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_MariamSorondMember" xlink:label="MariamSorondMember" xlink:title="MariamSorondMember" />
    <link:label xlink:type="resource" xlink:label="label_MariamSorondMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_MariamSorondMember" xml:lang="en-US" id="label_MariamSorondMember">This member stands for the information pertaining to &#x201C;Mariam Sorond&#x201D;.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MariamSorondMember" xlink:to="label_MariamSorondMember" xlink:title="Label : MariamSorondMember to label_MariamSorondMember" />
    <link:label xlink:type="resource" xlink:label="label_MariamSorondMember_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_MariamSorondMember_1" xml:lang="en-US" id="label_MariamSorondMember_1">Mariam Sorond [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MariamSorondMember" xlink:to="label_MariamSorondMember_1" xlink:title="Label : MariamSorondMember to label_MariamSorondMember_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_AllTradingArrangementsMember" xlink:label="AllTradingArrangementsMember" xlink:title="AllTradingArrangementsMember" />
    <link:label xlink:type="resource" xlink:label="label_AllTradingArrangementsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_AllTradingArrangementsMember" xml:lang="en-US" id="label_AllTradingArrangementsMember">Trading Arrangement:</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AllTradingArrangementsMember" xlink:to="label_AllTradingArrangementsMember" xlink:title="Label : AllTradingArrangementsMember to label_AllTradingArrangementsMember" />
    <link:label xlink:type="resource" xlink:label="label_AllTradingArrangementsMember_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AllTradingArrangementsMember_1" xml:lang="en-US" id="label_AllTradingArrangementsMember_1">All Trading Arrangements [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AllTradingArrangementsMember" xlink:to="label_AllTradingArrangementsMember_1" xlink:title="Label : AllTradingArrangementsMember to label_AllTradingArrangementsMember_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RestrictedStockUnitsRSUMember" xlink:label="RestrictedStockUnitsRSUMember" xlink:title="RestrictedStockUnitsRSUMember" />
    <link:label xlink:type="resource" xlink:label="label_RestrictedStockUnitsRSUMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_RestrictedStockUnitsRSUMember" xml:lang="en-US" id="label_RestrictedStockUnitsRSUMember">Unvested Restricted Stock Units</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RestrictedStockUnitsRSUMember" xlink:to="label_RestrictedStockUnitsRSUMember" xlink:title="Label : RestrictedStockUnitsRSUMember to label_RestrictedStockUnitsRSUMember" />
    <link:label xlink:type="resource" xlink:label="label_RestrictedStockUnitsRSUMember_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_RestrictedStockUnitsRSUMember_1" xml:lang="en-US" id="label_RestrictedStockUnitsRSUMember_1">Restricted Stock Units (RSUs) [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RestrictedStockUnitsRSUMember" xlink:to="label_RestrictedStockUnitsRSUMember_1" xlink:title="Label : RestrictedStockUnitsRSUMember to label_RestrictedStockUnitsRSUMember_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PerformanceSharesMember" xlink:label="PerformanceSharesMember" xlink:title="PerformanceSharesMember" />
    <link:label xlink:type="resource" xlink:label="label_PerformanceSharesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_PerformanceSharesMember" xml:lang="en-US" id="label_PerformanceSharesMember">Performance Shares [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PerformanceSharesMember" xlink:to="label_PerformanceSharesMember" xlink:title="Label : PerformanceSharesMember to label_PerformanceSharesMember" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_TimeBasedRestrictedStockUnitsRSUMember" xlink:label="TimeBasedRestrictedStockUnitsRSUMember" xlink:title="TimeBasedRestrictedStockUnitsRSUMember" />
    <link:label xlink:type="resource" xlink:label="label_TimeBasedRestrictedStockUnitsRSUMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_TimeBasedRestrictedStockUnitsRSUMember" xml:lang="en-US" id="label_TimeBasedRestrictedStockUnitsRSUMember">Time Based Restricted Stock Units (RSUs) [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="TimeBasedRestrictedStockUnitsRSUMember" xlink:to="label_TimeBasedRestrictedStockUnitsRSUMember" xlink:title="Label : TimeBasedRestrictedStockUnitsRSUMember to label_TimeBasedRestrictedStockUnitsRSUMember" />
    <link:label xlink:type="resource" xlink:label="label_TimeBasedRestrictedStockUnitsRSUMember_1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_TimeBasedRestrictedStockUnitsRSUMember_1" xml:lang="en-US" id="label_TimeBasedRestrictedStockUnitsRSUMember_1">Share instrument which is convertible to stock or an equivalent amount of cash, after a specified period of time.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="TimeBasedRestrictedStockUnitsRSUMember" xlink:to="label_TimeBasedRestrictedStockUnitsRSUMember_1" xlink:title="Label : TimeBasedRestrictedStockUnitsRSUMember to label_TimeBasedRestrictedStockUnitsRSUMember_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_InsiderTradingArrLineItems" xlink:label="InsiderTradingArrLineItems" xlink:title="InsiderTradingArrLineItems" />
    <link:label xlink:type="resource" xlink:label="label_InsiderTradingArrLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_InsiderTradingArrLineItems" xml:lang="en-US" id="label_InsiderTradingArrLineItems">Insider Trading Arrangements [Line Items]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InsiderTradingArrLineItems" xlink:to="label_InsiderTradingArrLineItems" xlink:title="Label : InsiderTradingArrLineItems to label_InsiderTradingArrLineItems" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_TradingArrByIndTable" xlink:label="TradingArrByIndTable" xlink:title="TradingArrByIndTable" />
    <link:label xlink:type="resource" xlink:label="label_TradingArrByIndTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_TradingArrByIndTable" xml:lang="en-US" id="label_TradingArrByIndTable">Trading Arrangements, by Individual [Table]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="TradingArrByIndTable" xlink:to="label_TradingArrByIndTable" xlink:title="Label : TradingArrByIndTable to label_TradingArrByIndTable" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_TradingArrAxis" xlink:label="TradingArrAxis" xlink:title="TradingArrAxis" />
    <link:label xlink:type="resource" xlink:label="label_TradingArrAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_TradingArrAxis" xml:lang="en-US" id="label_TradingArrAxis">Trading Arrangements, by Individual</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="TradingArrAxis" xlink:to="label_TradingArrAxis" xlink:title="Label : TradingArrAxis to label_TradingArrAxis" />
    <link:label xlink:type="resource" xlink:label="label_TradingArrAxis_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_TradingArrAxis_1" xml:lang="en-US" id="label_TradingArrAxis_1">Trading Arrangement [Axis]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="TradingArrAxis" xlink:to="label_TradingArrAxis_1" xlink:title="Label : TradingArrAxis to label_TradingArrAxis_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_IndividualAxis" xlink:label="IndividualAxis" xlink:title="IndividualAxis" />
    <link:label xlink:type="resource" xlink:label="label_IndividualAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_IndividualAxis" xml:lang="en-US" id="label_IndividualAxis">Individual:</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IndividualAxis" xlink:to="label_IndividualAxis" xlink:title="Label : IndividualAxis to label_IndividualAxis" />
    <link:label xlink:type="resource" xlink:label="label_IndividualAxis_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_IndividualAxis_1" xml:lang="en-US" id="label_IndividualAxis_1">Individual [Axis]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IndividualAxis" xlink:to="label_IndividualAxis_1" xlink:title="Label : IndividualAxis to label_IndividualAxis_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_MtrlTermsOfTrdArrTextBlock" xlink:label="MtrlTermsOfTrdArrTextBlock" xlink:title="MtrlTermsOfTrdArrTextBlock" />
    <link:label xlink:type="resource" xlink:label="label_MtrlTermsOfTrdArrTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_MtrlTermsOfTrdArrTextBlock" xml:lang="en-US" id="label_MtrlTermsOfTrdArrTextBlock">Material Terms of Trading Arrangement</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MtrlTermsOfTrdArrTextBlock" xlink:to="label_MtrlTermsOfTrdArrTextBlock" xlink:title="Label : MtrlTermsOfTrdArrTextBlock to label_MtrlTermsOfTrdArrTextBlock" />
    <link:label xlink:type="resource" xlink:label="label_MtrlTermsOfTrdArrTextBlock_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_MtrlTermsOfTrdArrTextBlock_1" xml:lang="en-US" id="label_MtrlTermsOfTrdArrTextBlock_1">Material Terms of Trading Arrangement [Text Block]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MtrlTermsOfTrdArrTextBlock" xlink:to="label_MtrlTermsOfTrdArrTextBlock_1" xlink:title="Label : MtrlTermsOfTrdArrTextBlock to label_MtrlTermsOfTrdArrTextBlock_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_TrdArrIndName" xlink:label="TrdArrIndName" xlink:title="TrdArrIndName" />
    <link:label xlink:type="resource" xlink:label="label_TrdArrIndName" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_TrdArrIndName" xml:lang="en-US" id="label_TrdArrIndName">Name</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="TrdArrIndName" xlink:to="label_TrdArrIndName" xlink:title="Label : TrdArrIndName to label_TrdArrIndName" />
    <link:label xlink:type="resource" xlink:label="label_TrdArrIndName_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_TrdArrIndName_1" xml:lang="en-US" id="label_TrdArrIndName_1">Trading Arrangement, Individual Name</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="TrdArrIndName" xlink:to="label_TrdArrIndName_1" xlink:title="Label : TrdArrIndName to label_TrdArrIndName_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_TrdArrIndTitle" xlink:label="TrdArrIndTitle" xlink:title="TrdArrIndTitle" />
    <link:label xlink:type="resource" xlink:label="label_TrdArrIndTitle" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_TrdArrIndTitle" xml:lang="en-US" id="label_TrdArrIndTitle">Title</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="TrdArrIndTitle" xlink:to="label_TrdArrIndTitle" xlink:title="Label : TrdArrIndTitle to label_TrdArrIndTitle" />
    <link:label xlink:type="resource" xlink:label="label_TrdArrIndTitle_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_TrdArrIndTitle_1" xml:lang="en-US" id="label_TrdArrIndTitle_1">Trading Arrangement, Individual Title</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="TrdArrIndTitle" xlink:to="label_TrdArrIndTitle_1" xlink:title="Label : TrdArrIndTitle to label_TrdArrIndTitle_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_Rule10b51ArrAdoptedFlag" xlink:label="Rule10b51ArrAdoptedFlag" xlink:title="Rule10b51ArrAdoptedFlag" />
    <link:label xlink:type="resource" xlink:label="label_Rule10b51ArrAdoptedFlag" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_Rule10b51ArrAdoptedFlag" xml:lang="en-US" id="label_Rule10b51ArrAdoptedFlag">Rule 10b5-1 Arrangement Adopted</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="Rule10b51ArrAdoptedFlag" xlink:to="label_Rule10b51ArrAdoptedFlag" xlink:title="Label : Rule10b51ArrAdoptedFlag to label_Rule10b51ArrAdoptedFlag" />
    <link:label xlink:type="resource" xlink:label="label_Rule10b51ArrAdoptedFlag_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_Rule10b51ArrAdoptedFlag_1" xml:lang="en-US" id="label_Rule10b51ArrAdoptedFlag_1">Rule 10b5-1 Arrangement Adopted [Flag]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="Rule10b51ArrAdoptedFlag" xlink:to="label_Rule10b51ArrAdoptedFlag_1" xlink:title="Label : Rule10b51ArrAdoptedFlag to label_Rule10b51ArrAdoptedFlag_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_NonRule10b51ArrAdoptedFlag" xlink:label="NonRule10b51ArrAdoptedFlag" xlink:title="NonRule10b51ArrAdoptedFlag" />
    <link:label xlink:type="resource" xlink:label="label_NonRule10b51ArrAdoptedFlag" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_NonRule10b51ArrAdoptedFlag" xml:lang="en-US" id="label_NonRule10b51ArrAdoptedFlag">Non-Rule 10b5-1 Arrangement Adopted</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NonRule10b51ArrAdoptedFlag" xlink:to="label_NonRule10b51ArrAdoptedFlag" xlink:title="Label : NonRule10b51ArrAdoptedFlag to label_NonRule10b51ArrAdoptedFlag" />
    <link:label xlink:type="resource" xlink:label="label_NonRule10b51ArrAdoptedFlag_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_NonRule10b51ArrAdoptedFlag_1" xml:lang="en-US" id="label_NonRule10b51ArrAdoptedFlag_1">Non-Rule 10b5-1 Arrangement Adopted [Flag]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NonRule10b51ArrAdoptedFlag" xlink:to="label_NonRule10b51ArrAdoptedFlag_1" xlink:title="Label : NonRule10b51ArrAdoptedFlag to label_NonRule10b51ArrAdoptedFlag_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_TrdArrAdoptionDate" xlink:label="TrdArrAdoptionDate" xlink:title="TrdArrAdoptionDate" />
    <link:label xlink:type="resource" xlink:label="label_TrdArrAdoptionDate" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_TrdArrAdoptionDate" xml:lang="en-US" id="label_TrdArrAdoptionDate">Adoption Date</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="TrdArrAdoptionDate" xlink:to="label_TrdArrAdoptionDate" xlink:title="Label : TrdArrAdoptionDate to label_TrdArrAdoptionDate" />
    <link:label xlink:type="resource" xlink:label="label_TrdArrAdoptionDate_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_TrdArrAdoptionDate_1" xml:lang="en-US" id="label_TrdArrAdoptionDate_1">Trading Arrangement Adoption Date</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="TrdArrAdoptionDate" xlink:to="label_TrdArrAdoptionDate_1" xlink:title="Label : TrdArrAdoptionDate to label_TrdArrAdoptionDate_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_Rule10b51ArrTrmntdFlag" xlink:label="Rule10b51ArrTrmntdFlag" xlink:title="Rule10b51ArrTrmntdFlag" />
    <link:label xlink:type="resource" xlink:label="label_Rule10b51ArrTrmntdFlag" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_Rule10b51ArrTrmntdFlag" xml:lang="en-US" id="label_Rule10b51ArrTrmntdFlag">Rule 10b5-1 Arrangement Terminated</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="Rule10b51ArrTrmntdFlag" xlink:to="label_Rule10b51ArrTrmntdFlag" xlink:title="Label : Rule10b51ArrTrmntdFlag to label_Rule10b51ArrTrmntdFlag" />
    <link:label xlink:type="resource" xlink:label="label_Rule10b51ArrTrmntdFlag_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_Rule10b51ArrTrmntdFlag_1" xml:lang="en-US" id="label_Rule10b51ArrTrmntdFlag_1">Rule 10b5-1 Arrangement Terminated [Flag]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="Rule10b51ArrTrmntdFlag" xlink:to="label_Rule10b51ArrTrmntdFlag_1" xlink:title="Label : Rule10b51ArrTrmntdFlag to label_Rule10b51ArrTrmntdFlag_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_NonRule10b51ArrTrmntdFlag" xlink:label="NonRule10b51ArrTrmntdFlag" xlink:title="NonRule10b51ArrTrmntdFlag" />
    <link:label xlink:type="resource" xlink:label="label_NonRule10b51ArrTrmntdFlag" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_NonRule10b51ArrTrmntdFlag" xml:lang="en-US" id="label_NonRule10b51ArrTrmntdFlag">Non-Rule 10b5-1 Arrangement Terminated</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NonRule10b51ArrTrmntdFlag" xlink:to="label_NonRule10b51ArrTrmntdFlag" xlink:title="Label : NonRule10b51ArrTrmntdFlag to label_NonRule10b51ArrTrmntdFlag" />
    <link:label xlink:type="resource" xlink:label="label_NonRule10b51ArrTrmntdFlag_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_NonRule10b51ArrTrmntdFlag_1" xml:lang="en-US" id="label_NonRule10b51ArrTrmntdFlag_1">Non-Rule 10b5-1 Arrangement Terminated [Flag]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NonRule10b51ArrTrmntdFlag" xlink:to="label_NonRule10b51ArrTrmntdFlag_1" xlink:title="Label : NonRule10b51ArrTrmntdFlag to label_NonRule10b51ArrTrmntdFlag_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_TrdArrTerminationDate" xlink:label="TrdArrTerminationDate" xlink:title="TrdArrTerminationDate" />
    <link:label xlink:type="resource" xlink:label="label_TrdArrTerminationDate" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_TrdArrTerminationDate" xml:lang="en-US" id="label_TrdArrTerminationDate">Termination Date</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="TrdArrTerminationDate" xlink:to="label_TrdArrTerminationDate" xlink:title="Label : TrdArrTerminationDate to label_TrdArrTerminationDate" />
    <link:label xlink:type="resource" xlink:label="label_TrdArrTerminationDate_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_TrdArrTerminationDate_1" xml:lang="en-US" id="label_TrdArrTerminationDate_1">Trading Arrangement Termination Date</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="TrdArrTerminationDate" xlink:to="label_TrdArrTerminationDate_1" xlink:title="Label : TrdArrTerminationDate to label_TrdArrTerminationDate_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_TrdArrExpirationDate" xlink:label="TrdArrExpirationDate" xlink:title="TrdArrExpirationDate" />
    <link:label xlink:type="resource" xlink:label="label_TrdArrExpirationDate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_TrdArrExpirationDate" xml:lang="en-US" id="label_TrdArrExpirationDate">Trading Arrangement Expiration Date</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="TrdArrExpirationDate" xlink:to="label_TrdArrExpirationDate" xlink:title="Label : TrdArrExpirationDate to label_TrdArrExpirationDate" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_TrdArrDuration" xlink:label="TrdArrDuration" xlink:title="TrdArrDuration" />
    <link:label xlink:type="resource" xlink:label="label_TrdArrDuration" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_TrdArrDuration" xml:lang="en-US" id="label_TrdArrDuration">Trading Arrangement Duration</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="TrdArrDuration" xlink:to="label_TrdArrDuration" xlink:title="Label : TrdArrDuration to label_TrdArrDuration" />
    <link:label xlink:type="resource" xlink:label="label_TrdArrDuration_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_TrdArrDuration_1" xml:lang="en-US" id="label_TrdArrDuration_1">Arrangement Duration</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="TrdArrDuration" xlink:to="label_TrdArrDuration_1" xlink:title="Label : TrdArrDuration to label_TrdArrDuration_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_TrdArrSecuritiesAggAvailAmt" xlink:label="TrdArrSecuritiesAggAvailAmt" xlink:title="TrdArrSecuritiesAggAvailAmt" />
    <link:label xlink:type="resource" xlink:label="label_TrdArrSecuritiesAggAvailAmt" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_TrdArrSecuritiesAggAvailAmt" xml:lang="en-US" id="label_TrdArrSecuritiesAggAvailAmt">Trading Arrangement, Securities Aggregate Available Amount</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="TrdArrSecuritiesAggAvailAmt" xlink:to="label_TrdArrSecuritiesAggAvailAmt" xlink:title="Label : TrdArrSecuritiesAggAvailAmt to label_TrdArrSecuritiesAggAvailAmt" />
    <link:label xlink:type="resource" xlink:label="label_TrdArrSecuritiesAggAvailAmt_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_TrdArrSecuritiesAggAvailAmt_1" xml:lang="en-US" id="label_TrdArrSecuritiesAggAvailAmt_1">Aggregate Available</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="TrdArrSecuritiesAggAvailAmt" xlink:to="label_TrdArrSecuritiesAggAvailAmt_1" xlink:title="Label : TrdArrSecuritiesAggAvailAmt to label_TrdArrSecuritiesAggAvailAmt_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BasisOfAccountingPolicyPolicyTextBlock" xlink:label="BasisOfAccountingPolicyPolicyTextBlock" xlink:title="BasisOfAccountingPolicyPolicyTextBlock" />
    <link:label xlink:type="resource" xlink:label="label_BasisOfAccountingPolicyPolicyTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_BasisOfAccountingPolicyPolicyTextBlock" xml:lang="en-US" id="label_BasisOfAccountingPolicyPolicyTextBlock">Basis of Presentation</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="BasisOfAccountingPolicyPolicyTextBlock" xlink:to="label_BasisOfAccountingPolicyPolicyTextBlock" xlink:title="Label : BasisOfAccountingPolicyPolicyTextBlock to label_BasisOfAccountingPolicyPolicyTextBlock" />
    <link:label xlink:type="resource" xlink:label="label_BasisOfAccountingPolicyPolicyTextBlock_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_BasisOfAccountingPolicyPolicyTextBlock_1" xml:lang="en-US" id="label_BasisOfAccountingPolicyPolicyTextBlock_1">Basis of Accounting, Policy [Policy Text Block]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="BasisOfAccountingPolicyPolicyTextBlock" xlink:to="label_BasisOfAccountingPolicyPolicyTextBlock_1" xlink:title="Label : BasisOfAccountingPolicyPolicyTextBlock to label_BasisOfAccountingPolicyPolicyTextBlock_1" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_UnauditedInterimFinancialInformationsPolicyTextBlock" xlink:label="UnauditedInterimFinancialInformationsPolicyTextBlock" xlink:title="UnauditedInterimFinancialInformationsPolicyTextBlock" />
    <link:label xlink:type="resource" xlink:label="label_UnauditedInterimFinancialInformationsPolicyTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_UnauditedInterimFinancialInformationsPolicyTextBlock" xml:lang="en-US" id="label_UnauditedInterimFinancialInformationsPolicyTextBlock">Unaudited Interim Financial Information</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="UnauditedInterimFinancialInformationsPolicyTextBlock" xlink:to="label_UnauditedInterimFinancialInformationsPolicyTextBlock" xlink:title="Label : UnauditedInterimFinancialInformationsPolicyTextBlock to label_UnauditedInterimFinancialInformationsPolicyTextBlock" />
    <link:label xlink:type="resource" xlink:label="label_UnauditedInterimFinancialInformationsPolicyTextBlock_1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_UnauditedInterimFinancialInformationsPolicyTextBlock_1" xml:lang="en-US" id="label_UnauditedInterimFinancialInformationsPolicyTextBlock_1">The disclosure of accounting policy for unaudited interim financial information.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="UnauditedInterimFinancialInformationsPolicyTextBlock" xlink:to="label_UnauditedInterimFinancialInformationsPolicyTextBlock_1" xlink:title="Label : UnauditedInterimFinancialInformationsPolicyTextBlock to label_UnauditedInterimFinancialInformationsPolicyTextBlock_1" />
    <link:label xlink:type="resource" xlink:label="label_UnauditedInterimFinancialInformationsPolicyTextBlock_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_UnauditedInterimFinancialInformationsPolicyTextBlock_2" xml:lang="en-US" id="label_UnauditedInterimFinancialInformationsPolicyTextBlock_2">Unaudited Interim Financial Informations [Policy Text Block]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="UnauditedInterimFinancialInformationsPolicyTextBlock" xlink:to="label_UnauditedInterimFinancialInformationsPolicyTextBlock_2" xlink:title="Label : UnauditedInterimFinancialInformationsPolicyTextBlock to label_UnauditedInterimFinancialInformationsPolicyTextBlock_2" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_UseOfEstimates" xlink:label="UseOfEstimates" xlink:title="UseOfEstimates" />
    <link:label xlink:type="resource" xlink:label="label_UseOfEstimates" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_UseOfEstimates" xml:lang="en-US" id="label_UseOfEstimates">Use of Estimates</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="UseOfEstimates" xlink:to="label_UseOfEstimates" xlink:title="Label : UseOfEstimates to label_UseOfEstimates" />
    <link:label xlink:type="resource" xlink:label="label_UseOfEstimates_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_UseOfEstimates_1" xml:lang="en-US" id="label_UseOfEstimates_1">Use of Estimates, Policy [Policy Text Block]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="UseOfEstimates" xlink:to="label_UseOfEstimates_1" xlink:title="Label : UseOfEstimates to label_UseOfEstimates_1" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_CashAndCashEquivalentsAndMarketableSecuritiesPolicyTextBlock" xlink:label="CashAndCashEquivalentsAndMarketableSecuritiesPolicyTextBlock" xlink:title="CashAndCashEquivalentsAndMarketableSecuritiesPolicyTextBlock" />
    <link:label xlink:type="resource" xlink:label="label_CashAndCashEquivalentsAndMarketableSecuritiesPolicyTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CashAndCashEquivalentsAndMarketableSecuritiesPolicyTextBlock" xml:lang="en-US" id="label_CashAndCashEquivalentsAndMarketableSecuritiesPolicyTextBlock">Cash and Cash Equivalents and Marketable Securities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CashAndCashEquivalentsAndMarketableSecuritiesPolicyTextBlock" xlink:to="label_CashAndCashEquivalentsAndMarketableSecuritiesPolicyTextBlock" xlink:title="Label : CashAndCashEquivalentsAndMarketableSecuritiesPolicyTextBlock to label_CashAndCashEquivalentsAndMarketableSecuritiesPolicyTextBlock" />
    <link:label xlink:type="resource" xlink:label="label_CashAndCashEquivalentsAndMarketableSecuritiesPolicyTextBlock_1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_CashAndCashEquivalentsAndMarketableSecuritiesPolicyTextBlock_1" xml:lang="en-US" id="label_CashAndCashEquivalentsAndMarketableSecuritiesPolicyTextBlock_1">Disclosure of accounting policy for cash and cash equivalents and marketable securities.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CashAndCashEquivalentsAndMarketableSecuritiesPolicyTextBlock" xlink:to="label_CashAndCashEquivalentsAndMarketableSecuritiesPolicyTextBlock_1" xlink:title="Label : CashAndCashEquivalentsAndMarketableSecuritiesPolicyTextBlock to label_CashAndCashEquivalentsAndMarketableSecuritiesPolicyTextBlock_1" />
    <link:label xlink:type="resource" xlink:label="label_CashAndCashEquivalentsAndMarketableSecuritiesPolicyTextBlock_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_CashAndCashEquivalentsAndMarketableSecuritiesPolicyTextBlock_2" xml:lang="en-US" id="label_CashAndCashEquivalentsAndMarketableSecuritiesPolicyTextBlock_2">Cash and Cash Equivalents and Marketable Securities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CashAndCashEquivalentsAndMarketableSecuritiesPolicyTextBlock" xlink:to="label_CashAndCashEquivalentsAndMarketableSecuritiesPolicyTextBlock_2" xlink:title="Label : CashAndCashEquivalentsAndMarketableSecuritiesPolicyTextBlock to label_CashAndCashEquivalentsAndMarketableSecuritiesPolicyTextBlock_2" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RevenueRecognitionPolicyTextBlock" xlink:label="RevenueRecognitionPolicyTextBlock" xlink:title="RevenueRecognitionPolicyTextBlock" />
    <link:label xlink:type="resource" xlink:label="label_RevenueRecognitionPolicyTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_RevenueRecognitionPolicyTextBlock" xml:lang="en-US" id="label_RevenueRecognitionPolicyTextBlock">Revenue [Policy Text Block]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RevenueRecognitionPolicyTextBlock" xlink:to="label_RevenueRecognitionPolicyTextBlock" xlink:title="Label : RevenueRecognitionPolicyTextBlock to label_RevenueRecognitionPolicyTextBlock" />
    <link:label xlink:type="resource" xlink:label="label_RevenueRecognitionPolicyTextBlock_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_RevenueRecognitionPolicyTextBlock_1" xml:lang="en-US" id="label_RevenueRecognitionPolicyTextBlock_1">Revenue</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RevenueRecognitionPolicyTextBlock" xlink:to="label_RevenueRecognitionPolicyTextBlock_1" xlink:title="Label : RevenueRecognitionPolicyTextBlock to label_RevenueRecognitionPolicyTextBlock_1" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_ContractBalancePolicyTextBlock" xlink:label="ContractBalancePolicyTextBlock" xlink:title="ContractBalancePolicyTextBlock" />
    <link:label xlink:type="resource" xlink:label="label_ContractBalancePolicyTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ContractBalancePolicyTextBlock" xml:lang="en-US" id="label_ContractBalancePolicyTextBlock">ContractBalancePolicyTextBlock</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ContractBalancePolicyTextBlock" xlink:to="label_ContractBalancePolicyTextBlock" xlink:title="Label : ContractBalancePolicyTextBlock to label_ContractBalancePolicyTextBlock" />
    <link:label xlink:type="resource" xlink:label="label_ContractBalancePolicyTextBlock_1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_ContractBalancePolicyTextBlock_1" xml:lang="en-US" id="label_ContractBalancePolicyTextBlock_1">The entire disclosure of contract balance.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ContractBalancePolicyTextBlock" xlink:to="label_ContractBalancePolicyTextBlock_1" xlink:title="Label : ContractBalancePolicyTextBlock to label_ContractBalancePolicyTextBlock_1" />
    <link:label xlink:type="resource" xlink:label="label_ContractBalancePolicyTextBlock_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ContractBalancePolicyTextBlock_2" xml:lang="en-US" id="label_ContractBalancePolicyTextBlock_2">Contract Balances</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ContractBalancePolicyTextBlock" xlink:to="label_ContractBalancePolicyTextBlock_2" xlink:title="Label : ContractBalancePolicyTextBlock to label_ContractBalancePolicyTextBlock_2" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationOptionAndIncentivePlansPolicy" xlink:label="ShareBasedCompensationOptionAndIncentivePlansPolicy" xlink:title="ShareBasedCompensationOptionAndIncentivePlansPolicy" />
    <link:label xlink:type="resource" xlink:label="label_ShareBasedCompensationOptionAndIncentivePlansPolicy" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ShareBasedCompensationOptionAndIncentivePlansPolicy" xml:lang="en-US" id="label_ShareBasedCompensationOptionAndIncentivePlansPolicy">Share-based Payment Arrangement [Policy Text Block]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ShareBasedCompensationOptionAndIncentivePlansPolicy" xlink:to="label_ShareBasedCompensationOptionAndIncentivePlansPolicy" xlink:title="Label : ShareBasedCompensationOptionAndIncentivePlansPolicy to label_ShareBasedCompensationOptionAndIncentivePlansPolicy" />
    <link:label xlink:type="resource" xlink:label="label_ShareBasedCompensationOptionAndIncentivePlansPolicy_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ShareBasedCompensationOptionAndIncentivePlansPolicy_1" xml:lang="en-US" id="label_ShareBasedCompensationOptionAndIncentivePlansPolicy_1">Equity-Based Compensation</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ShareBasedCompensationOptionAndIncentivePlansPolicy" xlink:to="label_ShareBasedCompensationOptionAndIncentivePlansPolicy_1" xlink:title="Label : ShareBasedCompensationOptionAndIncentivePlansPolicy to label_ShareBasedCompensationOptionAndIncentivePlansPolicy_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EquityMethodInvestmentsPolicy" xlink:label="EquityMethodInvestmentsPolicy" xlink:title="EquityMethodInvestmentsPolicy" />
    <link:label xlink:type="resource" xlink:label="label_EquityMethodInvestmentsPolicy" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_EquityMethodInvestmentsPolicy" xml:lang="en-US" id="label_EquityMethodInvestmentsPolicy">Equity Method Investment</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EquityMethodInvestmentsPolicy" xlink:to="label_EquityMethodInvestmentsPolicy" xlink:title="Label : EquityMethodInvestmentsPolicy to label_EquityMethodInvestmentsPolicy" />
    <link:label xlink:type="resource" xlink:label="label_EquityMethodInvestmentsPolicy_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_EquityMethodInvestmentsPolicy_1" xml:lang="en-US" id="label_EquityMethodInvestmentsPolicy_1">Equity Method Investments [Policy Text Block]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EquityMethodInvestmentsPolicy" xlink:to="label_EquityMethodInvestmentsPolicy_1" xlink:title="Label : EquityMethodInvestmentsPolicy to label_EquityMethodInvestmentsPolicy_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LesseeLeasesPolicyTextBlock" xlink:label="LesseeLeasesPolicyTextBlock" xlink:title="LesseeLeasesPolicyTextBlock" />
    <link:label xlink:type="resource" xlink:label="label_LesseeLeasesPolicyTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_LesseeLeasesPolicyTextBlock" xml:lang="en-US" id="label_LesseeLeasesPolicyTextBlock">Lessee, Leases [Policy Text Block]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LesseeLeasesPolicyTextBlock" xlink:to="label_LesseeLeasesPolicyTextBlock" xlink:title="Label : LesseeLeasesPolicyTextBlock to label_LesseeLeasesPolicyTextBlock" />
    <link:label xlink:type="resource" xlink:label="label_LesseeLeasesPolicyTextBlock_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_LesseeLeasesPolicyTextBlock_1" xml:lang="en-US" id="label_LesseeLeasesPolicyTextBlock_1">Leases</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LesseeLeasesPolicyTextBlock" xlink:to="label_LesseeLeasesPolicyTextBlock_1" xlink:title="Label : LesseeLeasesPolicyTextBlock to label_LesseeLeasesPolicyTextBlock_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IntangibleAssetsFiniteLivedPolicy" xlink:label="IntangibleAssetsFiniteLivedPolicy" xlink:title="IntangibleAssetsFiniteLivedPolicy" />
    <link:label xlink:type="resource" xlink:label="label_IntangibleAssetsFiniteLivedPolicy" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_IntangibleAssetsFiniteLivedPolicy" xml:lang="en-US" id="label_IntangibleAssetsFiniteLivedPolicy">Acquired finite-lived intangible assets</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IntangibleAssetsFiniteLivedPolicy" xlink:to="label_IntangibleAssetsFiniteLivedPolicy" xlink:title="Label : IntangibleAssetsFiniteLivedPolicy to label_IntangibleAssetsFiniteLivedPolicy" />
    <link:label xlink:type="resource" xlink:label="label_IntangibleAssetsFiniteLivedPolicy_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_IntangibleAssetsFiniteLivedPolicy_1" xml:lang="en-US" id="label_IntangibleAssetsFiniteLivedPolicy_1">Intangible Assets, Finite-Lived, Policy [Policy Text Block]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IntangibleAssetsFiniteLivedPolicy" xlink:to="label_IntangibleAssetsFiniteLivedPolicy_1" xlink:title="Label : IntangibleAssetsFiniteLivedPolicy to label_IntangibleAssetsFiniteLivedPolicy_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GoodwillAndIntangibleAssetsGoodwillPolicy" xlink:label="GoodwillAndIntangibleAssetsGoodwillPolicy" xlink:title="GoodwillAndIntangibleAssetsGoodwillPolicy" />
    <link:label xlink:type="resource" xlink:label="label_GoodwillAndIntangibleAssetsGoodwillPolicy" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_GoodwillAndIntangibleAssetsGoodwillPolicy" xml:lang="en-US" id="label_GoodwillAndIntangibleAssetsGoodwillPolicy">Goodwill</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="GoodwillAndIntangibleAssetsGoodwillPolicy" xlink:to="label_GoodwillAndIntangibleAssetsGoodwillPolicy" xlink:title="Label : GoodwillAndIntangibleAssetsGoodwillPolicy to label_GoodwillAndIntangibleAssetsGoodwillPolicy" />
    <link:label xlink:type="resource" xlink:label="label_GoodwillAndIntangibleAssetsGoodwillPolicy_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_GoodwillAndIntangibleAssetsGoodwillPolicy_1" xml:lang="en-US" id="label_GoodwillAndIntangibleAssetsGoodwillPolicy_1">Goodwill and Intangible Assets, Goodwill, Policy [Policy Text Block]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="GoodwillAndIntangibleAssetsGoodwillPolicy" xlink:to="label_GoodwillAndIntangibleAssetsGoodwillPolicy_1" xlink:title="Label : GoodwillAndIntangibleAssetsGoodwillPolicy to label_GoodwillAndIntangibleAssetsGoodwillPolicy_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessCombinationsPolicy" xlink:label="BusinessCombinationsPolicy" xlink:title="BusinessCombinationsPolicy" />
    <link:label xlink:type="resource" xlink:label="label_BusinessCombinationsPolicy" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_BusinessCombinationsPolicy" xml:lang="en-US" id="label_BusinessCombinationsPolicy">Acquisitions</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="BusinessCombinationsPolicy" xlink:to="label_BusinessCombinationsPolicy" xlink:title="Label : BusinessCombinationsPolicy to label_BusinessCombinationsPolicy" />
    <link:label xlink:type="resource" xlink:label="label_BusinessCombinationsPolicy_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_BusinessCombinationsPolicy_1" xml:lang="en-US" id="label_BusinessCombinationsPolicy_1">Business Combinations Policy [Policy Text Block]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="BusinessCombinationsPolicy" xlink:to="label_BusinessCombinationsPolicy_1" xlink:title="Label : BusinessCombinationsPolicy to label_BusinessCombinationsPolicy_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtPolicyTextBlock" xlink:label="DebtPolicyTextBlock" xlink:title="DebtPolicyTextBlock" />
    <link:label xlink:type="resource" xlink:label="label_DebtPolicyTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_DebtPolicyTextBlock" xml:lang="en-US" id="label_DebtPolicyTextBlock">Long term debt</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtPolicyTextBlock" xlink:to="label_DebtPolicyTextBlock" xlink:title="Label : DebtPolicyTextBlock to label_DebtPolicyTextBlock" />
    <link:label xlink:type="resource" xlink:label="label_DebtPolicyTextBlock_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DebtPolicyTextBlock_1" xml:lang="en-US" id="label_DebtPolicyTextBlock_1">Debt, Policy [Policy Text Block]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtPolicyTextBlock" xlink:to="label_DebtPolicyTextBlock_1" xlink:title="Label : DebtPolicyTextBlock to label_DebtPolicyTextBlock_1" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_NoncontrollingInterestsPolicyTextBlock" xlink:label="NoncontrollingInterestsPolicyTextBlock" xlink:title="NoncontrollingInterestsPolicyTextBlock" />
    <link:label xlink:type="resource" xlink:label="label_NoncontrollingInterestsPolicyTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_NoncontrollingInterestsPolicyTextBlock" xml:lang="en-US" id="label_NoncontrollingInterestsPolicyTextBlock">Non-controlling Interests</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NoncontrollingInterestsPolicyTextBlock" xlink:to="label_NoncontrollingInterestsPolicyTextBlock" xlink:title="Label : NoncontrollingInterestsPolicyTextBlock to label_NoncontrollingInterestsPolicyTextBlock" />
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    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfRecognizedIdentifiedAssetsAcquiredAndLiabilitiesAssumedTableTextBlock" xlink:label="ScheduleOfRecognizedIdentifiedAssetsAcquiredAndLiabilitiesAssumedTableTextBlock" xlink:title="ScheduleOfRecognizedIdentifiedAssetsAcquiredAndLiabilitiesAssumedTableTextBlock" />
    <link:label xlink:type="resource" xlink:label="label_ScheduleOfRecognizedIdentifiedAssetsAcquiredAndLiabilitiesAssumedTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ScheduleOfRecognizedIdentifiedAssetsAcquiredAndLiabilitiesAssumedTableTextBlock" xml:lang="en-US" id="label_ScheduleOfRecognizedIdentifiedAssetsAcquiredAndLiabilitiesAssumedTableTextBlock">Schedule of business combination</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfRecognizedIdentifiedAssetsAcquiredAndLiabilitiesAssumedTableTextBlock" xlink:to="label_ScheduleOfRecognizedIdentifiedAssetsAcquiredAndLiabilitiesAssumedTableTextBlock" xlink:title="Label : ScheduleOfRecognizedIdentifiedAssetsAcquiredAndLiabilitiesAssumedTableTextBlock to label_ScheduleOfRecognizedIdentifiedAssetsAcquiredAndLiabilitiesAssumedTableTextBlock" />
    <link:label xlink:type="resource" xlink:label="label_ScheduleOfRecognizedIdentifiedAssetsAcquiredAndLiabilitiesAssumedTableTextBlock_1" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="label_ScheduleOfRecognizedIdentifiedAssetsAcquiredAndLiabilitiesAssumedTableTextBlock_1" xml:lang="en-US" id="label_ScheduleOfRecognizedIdentifiedAssetsAcquiredAndLiabilitiesAssumedTableTextBlock_1">Schedule of acquired assets and assumed liabilities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfRecognizedIdentifiedAssetsAcquiredAndLiabilitiesAssumedTableTextBlock" xlink:to="label_ScheduleOfRecognizedIdentifiedAssetsAcquiredAndLiabilitiesAssumedTableTextBlock_1" xlink:title="Label : ScheduleOfRecognizedIdentifiedAssetsAcquiredAndLiabilitiesAssumedTableTextBlock to label_ScheduleOfRecognizedIdentifiedAssetsAcquiredAndLiabilitiesAssumedTableTextBlock_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CashCashEquivalentsAndShortTermInvestments" xlink:label="CashCashEquivalentsAndShortTermInvestments" xlink:title="CashCashEquivalentsAndShortTermInvestments" />
    <link:label xlink:type="resource" xlink:label="label_CashCashEquivalentsAndShortTermInvestments" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_CashCashEquivalentsAndShortTermInvestments" xml:lang="en-US" id="label_CashCashEquivalentsAndShortTermInvestments">Short term investments</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CashCashEquivalentsAndShortTermInvestments" xlink:to="label_CashCashEquivalentsAndShortTermInvestments" xlink:title="Label : CashCashEquivalentsAndShortTermInvestments to label_CashCashEquivalentsAndShortTermInvestments" />
    <link:label xlink:type="resource" xlink:label="label_CashCashEquivalentsAndShortTermInvestments_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CashCashEquivalentsAndShortTermInvestments_1" xml:lang="en-US" id="label_CashCashEquivalentsAndShortTermInvestments_1">Cash, Cash Equivalents, and Short-Term Investments</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CashCashEquivalentsAndShortTermInvestments" xlink:to="label_CashCashEquivalentsAndShortTermInvestments_1" xlink:title="Label : CashCashEquivalentsAndShortTermInvestments to label_CashCashEquivalentsAndShortTermInvestments_1" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_SummaryOfSignificantAccountingPoliciesDetailsTable" xlink:label="SummaryOfSignificantAccountingPoliciesDetailsTable" xlink:title="SummaryOfSignificantAccountingPoliciesDetailsTable" />
    <link:label xlink:type="resource" xlink:label="label_SummaryOfSignificantAccountingPoliciesDetailsTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_SummaryOfSignificantAccountingPoliciesDetailsTable" xml:lang="en-US" id="label_SummaryOfSignificantAccountingPoliciesDetailsTable">Summary of Significant Accounting Policies Details [Table]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SummaryOfSignificantAccountingPoliciesDetailsTable" xlink:to="label_SummaryOfSignificantAccountingPoliciesDetailsTable" xlink:title="Label : SummaryOfSignificantAccountingPoliciesDetailsTable to label_SummaryOfSignificantAccountingPoliciesDetailsTable" />
    <link:label xlink:type="resource" xlink:label="label_SummaryOfSignificantAccountingPoliciesDetailsTable_1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_SummaryOfSignificantAccountingPoliciesDetailsTable_1" xml:lang="en-US" id="label_SummaryOfSignificantAccountingPoliciesDetailsTable_1">Schedule of information about summary of significant accounting policies.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SummaryOfSignificantAccountingPoliciesDetailsTable" xlink:to="label_SummaryOfSignificantAccountingPoliciesDetailsTable_1" xlink:title="Label : SummaryOfSignificantAccountingPoliciesDetailsTable to label_SummaryOfSignificantAccountingPoliciesDetailsTable_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ConsolidatedEntitiesAxis" xlink:label="ConsolidatedEntitiesAxis" xlink:title="ConsolidatedEntitiesAxis" />
    <link:label xlink:type="resource" xlink:label="label_ConsolidatedEntitiesAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ConsolidatedEntitiesAxis" xml:lang="en-US" id="label_ConsolidatedEntitiesAxis">Consolidated Entities [Axis]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ConsolidatedEntitiesAxis" xlink:to="label_ConsolidatedEntitiesAxis" xlink:title="Label : ConsolidatedEntitiesAxis to label_ConsolidatedEntitiesAxis" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ConsolidatedEntitiesDomain" xlink:label="ConsolidatedEntitiesDomain" xlink:title="ConsolidatedEntitiesDomain" />
    <link:label xlink:type="resource" xlink:label="label_ConsolidatedEntitiesDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ConsolidatedEntitiesDomain" xml:lang="en-US" id="label_ConsolidatedEntitiesDomain">Consolidated Entities [Domain]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ConsolidatedEntitiesDomain" xlink:to="label_ConsolidatedEntitiesDomain" xlink:title="Label : ConsolidatedEntitiesDomain to label_ConsolidatedEntitiesDomain" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_NextNavFranceMember" xlink:label="NextNavFranceMember" xlink:title="NextNavFranceMember" />
    <link:label xlink:type="resource" xlink:label="label_NextNavFranceMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_NextNavFranceMember" xml:lang="en-US" id="label_NextNavFranceMember">This member stands for the information pertaining to "NextNav France".</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NextNavFranceMember" xlink:to="label_NextNavFranceMember" xlink:title="Label : NextNavFranceMember to label_NextNavFranceMember" />
    <link:label xlink:type="resource" xlink:label="label_NextNavFranceMember_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_NextNavFranceMember_1" xml:lang="en-US" id="label_NextNavFranceMember_1">NextNav France [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NextNavFranceMember" xlink:to="label_NextNavFranceMember_1" xlink:title="Label : NextNavFranceMember to label_NextNavFranceMember_1" />
    <link:label xlink:type="resource" xlink:label="label_NextNavFranceMember_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_NextNavFranceMember_2" xml:lang="en-US" id="label_NextNavFranceMember_2">NextNav France [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NextNavFranceMember" xlink:to="label_NextNavFranceMember_2" xlink:title="Label : NextNavFranceMember to label_NextNavFranceMember_2" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_NextNavsMember" xlink:label="NextNavsMember" xlink:title="NextNavsMember" />
    <link:label xlink:type="resource" xlink:label="label_NextNavsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_NextNavsMember" xml:lang="en-US" id="label_NextNavsMember">NextNavsMember</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NextNavsMember" xlink:to="label_NextNavsMember" xlink:title="Label : NextNavsMember to label_NextNavsMember" />
    <link:label xlink:type="resource" xlink:label="label_NextNavsMember_1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_NextNavsMember_1" xml:lang="en-US" id="label_NextNavsMember_1">This member stands for the information pertaining to NextNav&#x2019;s.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NextNavsMember" xlink:to="label_NextNavsMember_1" xlink:title="Label : NextNavsMember to label_NextNavsMember_1" />
    <link:label xlink:type="resource" xlink:label="label_NextNavsMember_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_NextNavsMember_2" xml:lang="en-US" id="label_NextNavsMember_2">NextNav&#x2019;s [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NextNavsMember" xlink:to="label_NextNavsMember_2" xlink:title="Label : NextNavsMember to label_NextNavsMember_2" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RangeAxis" xlink:label="RangeAxis" xlink:title="RangeAxis" />
    <link:label xlink:type="resource" xlink:label="label_RangeAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_RangeAxis" xml:lang="en-US" id="label_RangeAxis">Statistical Measurement [Axis]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RangeAxis" xlink:to="label_RangeAxis" xlink:title="Label : RangeAxis to label_RangeAxis" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RangeMember" xlink:label="RangeMember" xlink:title="RangeMember" />
    <link:label xlink:type="resource" xlink:label="label_RangeMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_RangeMember" xml:lang="en-US" id="label_RangeMember">Statistical Measurement [Domain]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RangeMember" xlink:to="label_RangeMember" xlink:title="Label : RangeMember to label_RangeMember" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_MaximumMember" xlink:label="MaximumMember" xlink:title="MaximumMember" />
    <link:label xlink:type="resource" xlink:label="label_MaximumMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_MaximumMember" xml:lang="en-US" id="label_MaximumMember">Maximum [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MaximumMember" xlink:to="label_MaximumMember" xlink:title="Label : MaximumMember to label_MaximumMember" />
    <link:label xlink:type="resource" xlink:label="label_MaximumMember_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_MaximumMember_1" xml:lang="en-US" id="label_MaximumMember_1">Maximum [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MaximumMember" xlink:to="label_MaximumMember_1" xlink:title="Label : MaximumMember to label_MaximumMember_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_MinimumMember" xlink:label="MinimumMember" xlink:title="MinimumMember" />
    <link:label xlink:type="resource" xlink:label="label_MinimumMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_MinimumMember" xml:lang="en-US" id="label_MinimumMember">Minimum [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MinimumMember" xlink:to="label_MinimumMember" xlink:title="Label : MinimumMember to label_MinimumMember" />
    <link:label xlink:type="resource" xlink:label="label_MinimumMember_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_MinimumMember_1" xml:lang="en-US" id="label_MinimumMember_1">Minimum [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MinimumMember" xlink:to="label_MinimumMember_1" xlink:title="Label : MinimumMember to label_MinimumMember_1" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_SummaryOfSignificantAccountingPoliciesDetailsLineItems" xlink:label="SummaryOfSignificantAccountingPoliciesDetailsLineItems" xlink:title="SummaryOfSignificantAccountingPoliciesDetailsLineItems" />
    <link:label xlink:type="resource" xlink:label="label_SummaryOfSignificantAccountingPoliciesDetailsLineItems" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_SummaryOfSignificantAccountingPoliciesDetailsLineItems" xml:lang="en-US" id="label_SummaryOfSignificantAccountingPoliciesDetailsLineItems">Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SummaryOfSignificantAccountingPoliciesDetailsLineItems" xlink:to="label_SummaryOfSignificantAccountingPoliciesDetailsLineItems" xlink:title="Label : SummaryOfSignificantAccountingPoliciesDetailsLineItems to label_SummaryOfSignificantAccountingPoliciesDetailsLineItems" />
    <link:label xlink:type="resource" xlink:label="label_SummaryOfSignificantAccountingPoliciesDetailsLineItems_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_SummaryOfSignificantAccountingPoliciesDetailsLineItems_1" xml:lang="en-US" id="label_SummaryOfSignificantAccountingPoliciesDetailsLineItems_1">Summary of Significant Accounting Policies Details [Line Items]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SummaryOfSignificantAccountingPoliciesDetailsLineItems" xlink:to="label_SummaryOfSignificantAccountingPoliciesDetailsLineItems_1" xlink:title="Label : SummaryOfSignificantAccountingPoliciesDetailsLineItems to label_SummaryOfSignificantAccountingPoliciesDetailsLineItems_1" />
    <link:label xlink:type="resource" xlink:label="label_SummaryOfSignificantAccountingPoliciesDetailsLineItems_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_SummaryOfSignificantAccountingPoliciesDetailsLineItems_2" xml:lang="en-US" id="label_SummaryOfSignificantAccountingPoliciesDetailsLineItems_2">Summary of Significant Accounting Policies (Details) [Line Items]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SummaryOfSignificantAccountingPoliciesDetailsLineItems" xlink:to="label_SummaryOfSignificantAccountingPoliciesDetailsLineItems_2" xlink:title="Label : SummaryOfSignificantAccountingPoliciesDetailsLineItems to label_SummaryOfSignificantAccountingPoliciesDetailsLineItems_2" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccountsReceivableSale" xlink:label="AccountsReceivableSale" xlink:title="AccountsReceivableSale" />
    <link:label xlink:type="resource" xlink:label="label_AccountsReceivableSale" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AccountsReceivableSale" xml:lang="en-US" id="label_AccountsReceivableSale">Accounts Receivable, Sale</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AccountsReceivableSale" xlink:to="label_AccountsReceivableSale" xlink:title="Label : AccountsReceivableSale to label_AccountsReceivableSale" />
    <link:label xlink:type="resource" xlink:label="label_AccountsReceivableSale_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_AccountsReceivableSale_1" xml:lang="en-US" id="label_AccountsReceivableSale_1">Accounts receivable</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AccountsReceivableSale" xlink:to="label_AccountsReceivableSale_1" xlink:title="Label : AccountsReceivableSale to label_AccountsReceivableSale_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ContractWithCustomerLiability" xlink:label="ContractWithCustomerLiability" xlink:title="ContractWithCustomerLiability" />
    <link:label xlink:type="resource" xlink:label="label_ContractWithCustomerLiability" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ContractWithCustomerLiability" xml:lang="en-US" id="label_ContractWithCustomerLiability">Contract liabilities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ContractWithCustomerLiability" xlink:to="label_ContractWithCustomerLiability" xlink:title="Label : ContractWithCustomerLiability to label_ContractWithCustomerLiability" />
    <link:label xlink:type="resource" xlink:label="label_ContractWithCustomerLiability_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ContractWithCustomerLiability_1" xml:lang="en-US" id="label_ContractWithCustomerLiability_1">Contract with Customer, Liability</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ContractWithCustomerLiability" xlink:to="label_ContractWithCustomerLiability_1" xlink:title="Label : ContractWithCustomerLiability to label_ContractWithCustomerLiability_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AllowanceForDoubtfulAccountsReceivable" xlink:label="AllowanceForDoubtfulAccountsReceivable" xlink:title="AllowanceForDoubtfulAccountsReceivable" />
    <link:label xlink:type="resource" xlink:label="label_AllowanceForDoubtfulAccountsReceivable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_AllowanceForDoubtfulAccountsReceivable" xml:lang="en-US" id="label_AllowanceForDoubtfulAccountsReceivable">Allowances for doubtful accounts</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AllowanceForDoubtfulAccountsReceivable" xlink:to="label_AllowanceForDoubtfulAccountsReceivable" xlink:title="Label : AllowanceForDoubtfulAccountsReceivable to label_AllowanceForDoubtfulAccountsReceivable" />
    <link:label xlink:type="resource" xlink:label="label_AllowanceForDoubtfulAccountsReceivable_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AllowanceForDoubtfulAccountsReceivable_1" xml:lang="en-US" id="label_AllowanceForDoubtfulAccountsReceivable_1">Accounts Receivable, Allowance for Credit Loss</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AllowanceForDoubtfulAccountsReceivable" xlink:to="label_AllowanceForDoubtfulAccountsReceivable_1" xlink:title="Label : AllowanceForDoubtfulAccountsReceivable to label_AllowanceForDoubtfulAccountsReceivable_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GoodwillImpairedAccumulatedImpairmentLoss" xlink:label="GoodwillImpairedAccumulatedImpairmentLoss" xlink:title="GoodwillImpairedAccumulatedImpairmentLoss" />
    <link:label xlink:type="resource" xlink:label="label_GoodwillImpairedAccumulatedImpairmentLoss" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_GoodwillImpairedAccumulatedImpairmentLoss" xml:lang="en-US" id="label_GoodwillImpairedAccumulatedImpairmentLoss">Goodwill impairment</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="GoodwillImpairedAccumulatedImpairmentLoss" xlink:to="label_GoodwillImpairedAccumulatedImpairmentLoss" xlink:title="Label : GoodwillImpairedAccumulatedImpairmentLoss to label_GoodwillImpairedAccumulatedImpairmentLoss" />
    <link:label xlink:type="resource" xlink:label="label_GoodwillImpairedAccumulatedImpairmentLoss_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_GoodwillImpairedAccumulatedImpairmentLoss_1" xml:lang="en-US" id="label_GoodwillImpairedAccumulatedImpairmentLoss_1">Goodwill, Impaired, Accumulated Impairment Loss</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="GoodwillImpairedAccumulatedImpairmentLoss" xlink:to="label_GoodwillImpairedAccumulatedImpairmentLoss_1" xlink:title="Label : GoodwillImpairedAccumulatedImpairmentLoss to label_GoodwillImpairedAccumulatedImpairmentLoss_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AvailableForSaleSecuritiesDebtSecurities" xlink:label="AvailableForSaleSecuritiesDebtSecurities" xlink:title="AvailableForSaleSecuritiesDebtSecurities" />
    <link:label xlink:type="resource" xlink:label="label_AvailableForSaleSecuritiesDebtSecurities" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_AvailableForSaleSecuritiesDebtSecurities" xml:lang="en-US" id="label_AvailableForSaleSecuritiesDebtSecurities">Available-for-sale debt securities with fair value option election</link:label>
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    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_FairValueOptionChangesInFairValueGainLossOnAvailableForSaleDebtSecuritiesInShortTermInvestments" xlink:label="FairValueOptionChangesInFairValueGainLossOnAvailableForSaleDebtSecuritiesInShortTermInvestments" xlink:title="FairValueOptionChangesInFairValueGainLossOnAvailableForSaleDebtSecuritiesInShortTermInvestments" />
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    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_StockIssuedDuringPeriodSharesWarrantsIssued" xlink:label="StockIssuedDuringPeriodSharesWarrantsIssued" xlink:title="StockIssuedDuringPeriodSharesWarrantsIssued" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CommercialServicesMember" xlink:to="label_CommercialServicesMember_1" xlink:title="Label : CommercialServicesMember to label_CommercialServicesMember_1" />
    <link:label xlink:type="resource" xlink:label="label_CommercialServicesMember_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_CommercialServicesMember_2" xml:lang="en-US" id="label_CommercialServicesMember_2">This member stands for the information pertaining to commercial services.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CommercialServicesMember" xlink:to="label_CommercialServicesMember_2" xlink:title="Label : CommercialServicesMember to label_CommercialServicesMember_2" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_GovernmentContractServicesMember" xlink:label="GovernmentContractServicesMember" xlink:title="GovernmentContractServicesMember" />
    <link:label xlink:type="resource" xlink:label="label_GovernmentContractServicesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_GovernmentContractServicesMember" xml:lang="en-US" id="label_GovernmentContractServicesMember">Government Contract Services [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="GovernmentContractServicesMember" xlink:to="label_GovernmentContractServicesMember" xlink:title="Label : GovernmentContractServicesMember to label_GovernmentContractServicesMember" />
    <link:label xlink:type="resource" xlink:label="label_GovernmentContractServicesMember_1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_GovernmentContractServicesMember_1" xml:lang="en-US" id="label_GovernmentContractServicesMember_1">This member stands for the information pertaining to government contract services.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="GovernmentContractServicesMember" xlink:to="label_GovernmentContractServicesMember_1" xlink:title="Label : GovernmentContractServicesMember to label_GovernmentContractServicesMember_1" />
    <link:label xlink:type="resource" xlink:label="label_GovernmentContractServicesMember_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_GovernmentContractServicesMember_2" xml:lang="en-US" id="label_GovernmentContractServicesMember_2">Government contracts</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="GovernmentContractServicesMember" xlink:to="label_GovernmentContractServicesMember_2" xlink:title="Label : GovernmentContractServicesMember to label_GovernmentContractServicesMember_2" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_EquipmentSalesMember" xlink:label="EquipmentSalesMember" xlink:title="EquipmentSalesMember" />
    <link:label xlink:type="resource" xlink:label="label_EquipmentSalesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_EquipmentSalesMember" xml:lang="en-US" id="label_EquipmentSalesMember">Equipment Sales [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EquipmentSalesMember" xlink:to="label_EquipmentSalesMember" xlink:title="Label : EquipmentSalesMember to label_EquipmentSalesMember" />
    <link:label xlink:type="resource" xlink:label="label_EquipmentSalesMember_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_EquipmentSalesMember_1" xml:lang="en-US" id="label_EquipmentSalesMember_1">Equipment sales</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EquipmentSalesMember" xlink:to="label_EquipmentSalesMember_1" xlink:title="Label : EquipmentSalesMember to label_EquipmentSalesMember_1" />
    <link:label xlink:type="resource" xlink:label="label_EquipmentSalesMember_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_EquipmentSalesMember_2" xml:lang="en-US" id="label_EquipmentSalesMember_2">This member stands for the information pertaining to equipment sales.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EquipmentSalesMember" xlink:to="label_EquipmentSalesMember_2" xlink:title="Label : EquipmentSalesMember to label_EquipmentSalesMember_2" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DisaggregationOfRevenueLineItems" xlink:label="DisaggregationOfRevenueLineItems" xlink:title="DisaggregationOfRevenueLineItems" />
    <link:label xlink:type="resource" xlink:label="label_DisaggregationOfRevenueLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_DisaggregationOfRevenueLineItems" xml:lang="en-US" id="label_DisaggregationOfRevenueLineItems">Revenue disaggregated by category</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DisaggregationOfRevenueLineItems" xlink:to="label_DisaggregationOfRevenueLineItems" xlink:title="Label : DisaggregationOfRevenueLineItems to label_DisaggregationOfRevenueLineItems" />
    <link:label xlink:type="resource" xlink:label="label_DisaggregationOfRevenueLineItems_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DisaggregationOfRevenueLineItems_1" xml:lang="en-US" id="label_DisaggregationOfRevenueLineItems_1">Disaggregation of Revenue [Line Items]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DisaggregationOfRevenueLineItems" xlink:to="label_DisaggregationOfRevenueLineItems_1" xlink:title="Label : DisaggregationOfRevenueLineItems to label_DisaggregationOfRevenueLineItems_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax" xlink:label="RevenueFromContractWithCustomerIncludingAssessedTax" xlink:title="RevenueFromContractWithCustomerIncludingAssessedTax" />
    <link:label xlink:type="resource" xlink:label="label_RevenueFromContractWithCustomerIncludingAssessedTax" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_RevenueFromContractWithCustomerIncludingAssessedTax" xml:lang="en-US" id="label_RevenueFromContractWithCustomerIncludingAssessedTax">Total revenue</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RevenueFromContractWithCustomerIncludingAssessedTax" xlink:to="label_RevenueFromContractWithCustomerIncludingAssessedTax" xlink:title="Label : RevenueFromContractWithCustomerIncludingAssessedTax to label_RevenueFromContractWithCustomerIncludingAssessedTax" />
    <link:label xlink:type="resource" xlink:label="label_RevenueFromContractWithCustomerIncludingAssessedTax_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_RevenueFromContractWithCustomerIncludingAssessedTax_1" xml:lang="en-US" id="label_RevenueFromContractWithCustomerIncludingAssessedTax_1">Revenue from Contract with Customer, Including Assessed Tax</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RevenueFromContractWithCustomerIncludingAssessedTax" xlink:to="label_RevenueFromContractWithCustomerIncludingAssessedTax_1" xlink:title="Label : RevenueFromContractWithCustomerIncludingAssessedTax to label_RevenueFromContractWithCustomerIncludingAssessedTax_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTable" xlink:label="ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTable" xlink:title="ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTable" />
    <link:label xlink:type="resource" xlink:label="label_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTable" xml:lang="en-US" id="label_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTable">Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTable" xlink:to="label_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTable" xlink:title="Label : ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTable to label_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTable" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeStatementLocationAxis" xlink:label="IncomeStatementLocationAxis" xlink:title="IncomeStatementLocationAxis" />
    <link:label xlink:type="resource" xlink:label="label_IncomeStatementLocationAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_IncomeStatementLocationAxis" xml:lang="en-US" id="label_IncomeStatementLocationAxis">Income Statement Location [Axis]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncomeStatementLocationAxis" xlink:to="label_IncomeStatementLocationAxis" xlink:title="Label : IncomeStatementLocationAxis to label_IncomeStatementLocationAxis" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeStatementLocationDomain" xlink:label="IncomeStatementLocationDomain" xlink:title="IncomeStatementLocationDomain" />
    <link:label xlink:type="resource" xlink:label="label_IncomeStatementLocationDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_IncomeStatementLocationDomain" xml:lang="en-US" id="label_IncomeStatementLocationDomain">Income Statement Location [Domain]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncomeStatementLocationDomain" xlink:to="label_IncomeStatementLocationDomain" xlink:title="Label : IncomeStatementLocationDomain to label_IncomeStatementLocationDomain" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CostOfSalesMember" xlink:label="CostOfSalesMember" xlink:title="CostOfSalesMember" />
    <link:label xlink:type="resource" xlink:label="label_CostOfSalesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_CostOfSalesMember" xml:lang="en-US" id="label_CostOfSalesMember">Cost of goods sold</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CostOfSalesMember" xlink:to="label_CostOfSalesMember" xlink:title="Label : CostOfSalesMember to label_CostOfSalesMember" />
    <link:label xlink:type="resource" xlink:label="label_CostOfSalesMember_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CostOfSalesMember_1" xml:lang="en-US" id="label_CostOfSalesMember_1">Cost of Sales [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CostOfSalesMember" xlink:to="label_CostOfSalesMember_1" xlink:title="Label : CostOfSalesMember to label_CostOfSalesMember_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ResearchAndDevelopmentExpenseMember" xlink:label="ResearchAndDevelopmentExpenseMember" xlink:title="ResearchAndDevelopmentExpenseMember" />
    <link:label xlink:type="resource" xlink:label="label_ResearchAndDevelopmentExpenseMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ResearchAndDevelopmentExpenseMember" xml:lang="en-US" id="label_ResearchAndDevelopmentExpenseMember">Research and development</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ResearchAndDevelopmentExpenseMember" xlink:to="label_ResearchAndDevelopmentExpenseMember" xlink:title="Label : ResearchAndDevelopmentExpenseMember to label_ResearchAndDevelopmentExpenseMember" />
    <link:label xlink:type="resource" xlink:label="label_ResearchAndDevelopmentExpenseMember_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ResearchAndDevelopmentExpenseMember_1" xml:lang="en-US" id="label_ResearchAndDevelopmentExpenseMember_1">Research and Development Expense [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ResearchAndDevelopmentExpenseMember" xlink:to="label_ResearchAndDevelopmentExpenseMember_1" xlink:title="Label : ResearchAndDevelopmentExpenseMember to label_ResearchAndDevelopmentExpenseMember_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SellingGeneralAndAdministrativeExpensesMember" xlink:label="SellingGeneralAndAdministrativeExpensesMember" xlink:title="SellingGeneralAndAdministrativeExpensesMember" />
    <link:label xlink:type="resource" xlink:label="label_SellingGeneralAndAdministrativeExpensesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_SellingGeneralAndAdministrativeExpensesMember" xml:lang="en-US" id="label_SellingGeneralAndAdministrativeExpensesMember">Selling, general and administrative</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SellingGeneralAndAdministrativeExpensesMember" xlink:to="label_SellingGeneralAndAdministrativeExpensesMember" xlink:title="Label : SellingGeneralAndAdministrativeExpensesMember to label_SellingGeneralAndAdministrativeExpensesMember" />
    <link:label xlink:type="resource" xlink:label="label_SellingGeneralAndAdministrativeExpensesMember_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_SellingGeneralAndAdministrativeExpensesMember_1" xml:lang="en-US" id="label_SellingGeneralAndAdministrativeExpensesMember_1">Selling, General and Administrative Expenses [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SellingGeneralAndAdministrativeExpensesMember" xlink:to="label_SellingGeneralAndAdministrativeExpensesMember_1" xlink:title="Label : SellingGeneralAndAdministrativeExpensesMember to label_SellingGeneralAndAdministrativeExpensesMember_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems" xlink:label="EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems" xlink:title="EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems" />
    <link:label xlink:type="resource" xlink:label="label_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems" xml:lang="en-US" id="label_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems">Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems" xlink:to="label_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems" xlink:title="Label : EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems to label_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems" />
    <link:label xlink:type="resource" xlink:label="label_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems_1" xml:lang="en-US" id="label_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems_1">Details of the amount of stock-based compensation</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems" xlink:to="label_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems_1" xlink:title="Label : EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems to label_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AllocatedShareBasedCompensationExpense" xlink:label="AllocatedShareBasedCompensationExpense" xlink:title="AllocatedShareBasedCompensationExpense" />
    <link:label xlink:type="resource" xlink:label="label_AllocatedShareBasedCompensationExpense" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AllocatedShareBasedCompensationExpense" xml:lang="en-US" id="label_AllocatedShareBasedCompensationExpense">Share-Based Payment Arrangement, Expense</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AllocatedShareBasedCompensationExpense" xlink:to="label_AllocatedShareBasedCompensationExpense" xlink:title="Label : AllocatedShareBasedCompensationExpense to label_AllocatedShareBasedCompensationExpense" />
    <link:label xlink:type="resource" xlink:label="label_AllocatedShareBasedCompensationExpense_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_AllocatedShareBasedCompensationExpense_1" xml:lang="en-US" id="label_AllocatedShareBasedCompensationExpense_1">Total stock-based compensation expense</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AllocatedShareBasedCompensationExpense" xlink:to="label_AllocatedShareBasedCompensationExpense_1" xlink:title="Label : AllocatedShareBasedCompensationExpense to label_AllocatedShareBasedCompensationExpense_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetIncomeLossAvailableToCommonStockholdersDilutedAbstract" xlink:label="NetIncomeLossAvailableToCommonStockholdersDilutedAbstract" xlink:title="NetIncomeLossAvailableToCommonStockholdersDilutedAbstract" />
    <link:label xlink:type="resource" xlink:label="label_NetIncomeLossAvailableToCommonStockholdersDilutedAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_NetIncomeLossAvailableToCommonStockholdersDilutedAbstract" xml:lang="en-US" id="label_NetIncomeLossAvailableToCommonStockholdersDilutedAbstract">Numerator</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NetIncomeLossAvailableToCommonStockholdersDilutedAbstract" xlink:to="label_NetIncomeLossAvailableToCommonStockholdersDilutedAbstract" xlink:title="Label : NetIncomeLossAvailableToCommonStockholdersDilutedAbstract to label_NetIncomeLossAvailableToCommonStockholdersDilutedAbstract" />
    <link:label xlink:type="resource" xlink:label="label_NetIncomeLossAvailableToCommonStockholdersDilutedAbstract_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_NetIncomeLossAvailableToCommonStockholdersDilutedAbstract_1" xml:lang="en-US" id="label_NetIncomeLossAvailableToCommonStockholdersDilutedAbstract_1">Net Income (Loss) Available to Common Stockholders, Diluted [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NetIncomeLossAvailableToCommonStockholdersDilutedAbstract" xlink:to="label_NetIncomeLossAvailableToCommonStockholdersDilutedAbstract_1" xlink:title="Label : NetIncomeLossAvailableToCommonStockholdersDilutedAbstract to label_NetIncomeLossAvailableToCommonStockholdersDilutedAbstract_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable" xlink:label="ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable" xlink:title="ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable" />
    <link:label xlink:type="resource" xlink:label="label_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable" xml:lang="en-US" id="label_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable">Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable" xlink:to="label_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable" xlink:title="Label : ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable to label_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis" xlink:label="AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis" xlink:title="AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis" />
    <link:label xlink:type="resource" xlink:label="label_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis" xml:lang="en-US" id="label_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis">Antidilutive Securities [Axis]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis" xlink:to="label_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis" xlink:title="Label : AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis to label_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AntidilutiveSecuritiesNameDomain" xlink:label="AntidilutiveSecuritiesNameDomain" xlink:title="AntidilutiveSecuritiesNameDomain" />
    <link:label xlink:type="resource" xlink:label="label_AntidilutiveSecuritiesNameDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AntidilutiveSecuritiesNameDomain" xml:lang="en-US" id="label_AntidilutiveSecuritiesNameDomain">Antidilutive Securities, Name [Domain]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AntidilutiveSecuritiesNameDomain" xlink:to="label_AntidilutiveSecuritiesNameDomain" xlink:title="Label : AntidilutiveSecuritiesNameDomain to label_AntidilutiveSecuritiesNameDomain" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EmployeeStockOptionMember" xlink:label="EmployeeStockOptionMember" xlink:title="EmployeeStockOptionMember" />
    <link:label xlink:type="resource" xlink:label="label_EmployeeStockOptionMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_EmployeeStockOptionMember" xml:lang="en-US" id="label_EmployeeStockOptionMember">Stock Options</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EmployeeStockOptionMember" xlink:to="label_EmployeeStockOptionMember" xlink:title="Label : EmployeeStockOptionMember to label_EmployeeStockOptionMember" />
    <link:label xlink:type="resource" xlink:label="label_EmployeeStockOptionMember_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_EmployeeStockOptionMember_1" xml:lang="en-US" id="label_EmployeeStockOptionMember_1">Share-Based Payment Arrangement, Option [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EmployeeStockOptionMember" xlink:to="label_EmployeeStockOptionMember_1" xlink:title="Label : EmployeeStockOptionMember to label_EmployeeStockOptionMember_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RestrictedStockMember" xlink:label="RestrictedStockMember" xlink:title="RestrictedStockMember" />
    <link:label xlink:type="resource" xlink:label="label_RestrictedStockMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_RestrictedStockMember" xml:lang="en-US" id="label_RestrictedStockMember">Unvested Restricted Stock Awards</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RestrictedStockMember" xlink:to="label_RestrictedStockMember" xlink:title="Label : RestrictedStockMember to label_RestrictedStockMember" />
    <link:label xlink:type="resource" xlink:label="label_RestrictedStockMember_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_RestrictedStockMember_1" xml:lang="en-US" id="label_RestrictedStockMember_1">Restricted Stock [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RestrictedStockMember" xlink:to="label_RestrictedStockMember_1" xlink:title="Label : RestrictedStockMember to label_RestrictedStockMember_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ConvertibleDebtSecuritiesMember" xlink:label="ConvertibleDebtSecuritiesMember" xlink:title="ConvertibleDebtSecuritiesMember" />
    <link:label xlink:type="resource" xlink:label="label_ConvertibleDebtSecuritiesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ConvertibleDebtSecuritiesMember" xml:lang="en-US" id="label_ConvertibleDebtSecuritiesMember">2028 Notes Convertible Stock</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ConvertibleDebtSecuritiesMember" xlink:to="label_ConvertibleDebtSecuritiesMember" xlink:title="Label : ConvertibleDebtSecuritiesMember to label_ConvertibleDebtSecuritiesMember" />
    <link:label xlink:type="resource" xlink:label="label_ConvertibleDebtSecuritiesMember_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ConvertibleDebtSecuritiesMember_1" xml:lang="en-US" id="label_ConvertibleDebtSecuritiesMember_1">Convertible Debt Securities [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ConvertibleDebtSecuritiesMember" xlink:to="label_ConvertibleDebtSecuritiesMember_1" xlink:title="Label : ConvertibleDebtSecuritiesMember to label_ConvertibleDebtSecuritiesMember_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems" xlink:label="AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems" xlink:title="AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems" />
    <link:label xlink:type="resource" xlink:label="label_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems" xml:lang="en-US" id="label_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems">Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems" xlink:to="label_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems" xlink:title="Label : AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems to label_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems" />
    <link:label xlink:type="resource" xlink:label="label_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_1" xml:lang="en-US" id="label_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_1">Details of anti-dilutive securities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems" xlink:to="label_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_1" xlink:title="Label : AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems to label_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount" xlink:label="AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount" xlink:title="AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount" />
    <link:label xlink:type="resource" xlink:label="label_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount" xml:lang="en-US" id="label_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount">Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount" xlink:to="label_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount" xlink:title="Label : AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount to label_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount" />
    <link:label xlink:type="resource" xlink:label="label_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_1" xml:lang="en-US" id="label_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_1">Antidilutive Shares Excluded</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount" xlink:to="label_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_1" xlink:title="Label : AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount to label_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GoodwillAcquiredDuringPeriod" xlink:label="GoodwillAcquiredDuringPeriod" xlink:title="GoodwillAcquiredDuringPeriod" />
    <link:label xlink:type="resource" xlink:label="label_GoodwillAcquiredDuringPeriod" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_GoodwillAcquiredDuringPeriod" xml:lang="en-US" id="label_GoodwillAcquiredDuringPeriod">Goodwill, Acquired During Period</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="GoodwillAcquiredDuringPeriod" xlink:to="label_GoodwillAcquiredDuringPeriod" xlink:title="Label : GoodwillAcquiredDuringPeriod to label_GoodwillAcquiredDuringPeriod" />
    <link:label xlink:type="resource" xlink:label="label_GoodwillAcquiredDuringPeriod_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_GoodwillAcquiredDuringPeriod_1" xml:lang="en-US" id="label_GoodwillAcquiredDuringPeriod_1">New acquisition</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="GoodwillAcquiredDuringPeriod" xlink:to="label_GoodwillAcquiredDuringPeriod_1" xlink:title="Label : GoodwillAcquiredDuringPeriod to label_GoodwillAcquiredDuringPeriod_1" />
    <link:label xlink:type="resource" xlink:label="label_GoodwillAcquiredDuringPeriod_2" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="label_GoodwillAcquiredDuringPeriod_2" xml:lang="en-US" id="label_GoodwillAcquiredDuringPeriod_2">Goodwill</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="GoodwillAcquiredDuringPeriod" xlink:to="label_GoodwillAcquiredDuringPeriod_2" xlink:title="Label : GoodwillAcquiredDuringPeriod to label_GoodwillAcquiredDuringPeriod_2" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GoodwillForeignCurrencyTranslationGainLoss" xlink:label="GoodwillForeignCurrencyTranslationGainLoss" xlink:title="GoodwillForeignCurrencyTranslationGainLoss" />
    <link:label xlink:type="resource" xlink:label="label_GoodwillForeignCurrencyTranslationGainLoss" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_GoodwillForeignCurrencyTranslationGainLoss" xml:lang="en-US" id="label_GoodwillForeignCurrencyTranslationGainLoss">Changes in foreign exchange rates</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="GoodwillForeignCurrencyTranslationGainLoss" xlink:to="label_GoodwillForeignCurrencyTranslationGainLoss" xlink:title="Label : GoodwillForeignCurrencyTranslationGainLoss to label_GoodwillForeignCurrencyTranslationGainLoss" />
    <link:label xlink:type="resource" xlink:label="label_GoodwillForeignCurrencyTranslationGainLoss_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_GoodwillForeignCurrencyTranslationGainLoss_1" xml:lang="en-US" id="label_GoodwillForeignCurrencyTranslationGainLoss_1">Goodwill, Foreign Currency Translation Gain (Loss)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="GoodwillForeignCurrencyTranslationGainLoss" xlink:to="label_GoodwillForeignCurrencyTranslationGainLoss_1" xlink:title="Label : GoodwillForeignCurrencyTranslationGainLoss to label_GoodwillForeignCurrencyTranslationGainLoss_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GoodwillPurchaseAccountingAdjustments" xlink:label="GoodwillPurchaseAccountingAdjustments" xlink:title="GoodwillPurchaseAccountingAdjustments" />
    <link:label xlink:type="resource" xlink:label="label_GoodwillPurchaseAccountingAdjustments" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_GoodwillPurchaseAccountingAdjustments" xml:lang="en-US" id="label_GoodwillPurchaseAccountingAdjustments">Goodwill purchase accounting adjustments</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="GoodwillPurchaseAccountingAdjustments" xlink:to="label_GoodwillPurchaseAccountingAdjustments" xlink:title="Label : GoodwillPurchaseAccountingAdjustments to label_GoodwillPurchaseAccountingAdjustments" />
    <link:label xlink:type="resource" xlink:label="label_GoodwillPurchaseAccountingAdjustments_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_GoodwillPurchaseAccountingAdjustments_1" xml:lang="en-US" id="label_GoodwillPurchaseAccountingAdjustments_1">Purchase price adjustment</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="GoodwillPurchaseAccountingAdjustments" xlink:to="label_GoodwillPurchaseAccountingAdjustments_1" xlink:title="Label : GoodwillPurchaseAccountingAdjustments to label_GoodwillPurchaseAccountingAdjustments_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EmployeeRelatedLiabilitiesCurrent" xlink:label="EmployeeRelatedLiabilitiesCurrent" xlink:title="EmployeeRelatedLiabilitiesCurrent" />
    <link:label xlink:type="resource" xlink:label="label_EmployeeRelatedLiabilitiesCurrent" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_EmployeeRelatedLiabilitiesCurrent" xml:lang="en-US" id="label_EmployeeRelatedLiabilitiesCurrent">Employee-related Liabilities, Current</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EmployeeRelatedLiabilitiesCurrent" xlink:to="label_EmployeeRelatedLiabilitiesCurrent" xlink:title="Label : EmployeeRelatedLiabilitiesCurrent to label_EmployeeRelatedLiabilitiesCurrent" />
    <link:label xlink:type="resource" xlink:label="label_EmployeeRelatedLiabilitiesCurrent_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_EmployeeRelatedLiabilitiesCurrent_1" xml:lang="en-US" id="label_EmployeeRelatedLiabilitiesCurrent_1">Accrued salary and other employee liabilities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EmployeeRelatedLiabilitiesCurrent" xlink:to="label_EmployeeRelatedLiabilitiesCurrent_1" xlink:title="Label : EmployeeRelatedLiabilitiesCurrent to label_EmployeeRelatedLiabilitiesCurrent_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccruedProfessionalFeesCurrent" xlink:label="AccruedProfessionalFeesCurrent" xlink:title="AccruedProfessionalFeesCurrent" />
    <link:label xlink:type="resource" xlink:label="label_AccruedProfessionalFeesCurrent" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AccruedProfessionalFeesCurrent" xml:lang="en-US" id="label_AccruedProfessionalFeesCurrent">Accrued Professional Fees, Current</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AccruedProfessionalFeesCurrent" xlink:to="label_AccruedProfessionalFeesCurrent" xlink:title="Label : AccruedProfessionalFeesCurrent to label_AccruedProfessionalFeesCurrent" />
    <link:label xlink:type="resource" xlink:label="label_AccruedProfessionalFeesCurrent_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_AccruedProfessionalFeesCurrent_1" xml:lang="en-US" id="label_AccruedProfessionalFeesCurrent_1">Accrued legal and professional services</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AccruedProfessionalFeesCurrent" xlink:to="label_AccruedProfessionalFeesCurrent_1" xlink:title="Label : AccruedProfessionalFeesCurrent to label_AccruedProfessionalFeesCurrent_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InterestPayableCurrent" xlink:label="InterestPayableCurrent" xlink:title="InterestPayableCurrent" />
    <link:label xlink:type="resource" xlink:label="label_InterestPayableCurrent" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_InterestPayableCurrent" xml:lang="en-US" id="label_InterestPayableCurrent">Accrued interest</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InterestPayableCurrent" xlink:to="label_InterestPayableCurrent" xlink:title="Label : InterestPayableCurrent to label_InterestPayableCurrent" />
    <link:label xlink:type="resource" xlink:label="label_InterestPayableCurrent_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_InterestPayableCurrent_1" xml:lang="en-US" id="label_InterestPayableCurrent_1">Interest Payable, Current</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InterestPayableCurrent" xlink:to="label_InterestPayableCurrent_1" xlink:title="Label : InterestPayableCurrent to label_InterestPayableCurrent_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherAccruedLiabilitiesCurrent" xlink:label="OtherAccruedLiabilitiesCurrent" xlink:title="OtherAccruedLiabilitiesCurrent" />
    <link:label xlink:type="resource" xlink:label="label_OtherAccruedLiabilitiesCurrent" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="label_OtherAccruedLiabilitiesCurrent" xml:lang="en-US" id="label_OtherAccruedLiabilitiesCurrent">Other accrued liabilities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OtherAccruedLiabilitiesCurrent" xlink:to="label_OtherAccruedLiabilitiesCurrent" xlink:title="Label : OtherAccruedLiabilitiesCurrent to label_OtherAccruedLiabilitiesCurrent" />
    <link:label xlink:type="resource" xlink:label="label_OtherAccruedLiabilitiesCurrent_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_OtherAccruedLiabilitiesCurrent_1" xml:lang="en-US" id="label_OtherAccruedLiabilitiesCurrent_1">Other accrued liabilities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OtherAccruedLiabilitiesCurrent" xlink:to="label_OtherAccruedLiabilitiesCurrent_1" xlink:title="Label : OtherAccruedLiabilitiesCurrent to label_OtherAccruedLiabilitiesCurrent_1" />
    <link:label xlink:type="resource" xlink:label="label_OtherAccruedLiabilitiesCurrent_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_OtherAccruedLiabilitiesCurrent_2" xml:lang="en-US" id="label_OtherAccruedLiabilitiesCurrent_2">Other Accrued Liabilities, Current</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OtherAccruedLiabilitiesCurrent" xlink:to="label_OtherAccruedLiabilitiesCurrent_2" xlink:title="Label : OtherAccruedLiabilitiesCurrent to label_OtherAccruedLiabilitiesCurrent_2" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_AssetPurchaseAgreementLiabilityCurrent" xlink:label="AssetPurchaseAgreementLiabilityCurrent" xlink:title="AssetPurchaseAgreementLiabilityCurrent" />
    <link:label xlink:type="resource" xlink:label="label_AssetPurchaseAgreementLiabilityCurrent" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_AssetPurchaseAgreementLiabilityCurrent" xml:lang="en-US" id="label_AssetPurchaseAgreementLiabilityCurrent">Carrying value as of the balance sheet date of obligations incurred through that date and payable for asset acquisition upon purchase agreement. For classified balance sheets, represents the current portion of the liabilities (due within one year or within the normal operating cycle if longer).</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AssetPurchaseAgreementLiabilityCurrent" xlink:to="label_AssetPurchaseAgreementLiabilityCurrent" xlink:title="Label : AssetPurchaseAgreementLiabilityCurrent to label_AssetPurchaseAgreementLiabilityCurrent" />
    <link:label xlink:type="resource" xlink:label="label_AssetPurchaseAgreementLiabilityCurrent_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_AssetPurchaseAgreementLiabilityCurrent_1" xml:lang="en-US" id="label_AssetPurchaseAgreementLiabilityCurrent_1">Asset purchase agreement liability</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AssetPurchaseAgreementLiabilityCurrent" xlink:to="label_AssetPurchaseAgreementLiabilityCurrent_1" xlink:title="Label : AssetPurchaseAgreementLiabilityCurrent to label_AssetPurchaseAgreementLiabilityCurrent_1" />
    <link:label xlink:type="resource" xlink:label="label_AssetPurchaseAgreementLiabilityCurrent_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AssetPurchaseAgreementLiabilityCurrent_2" xml:lang="en-US" id="label_AssetPurchaseAgreementLiabilityCurrent_2">Asset Purchase Agreement Liability, Current</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AssetPurchaseAgreementLiabilityCurrent" xlink:to="label_AssetPurchaseAgreementLiabilityCurrent_2" xlink:title="Label : AssetPurchaseAgreementLiabilityCurrent to label_AssetPurchaseAgreementLiabilityCurrent_2" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetAcquisitionTable" xlink:label="AssetAcquisitionTable" xlink:title="AssetAcquisitionTable" />
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    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetAcquisitionAxis" xlink:label="AssetAcquisitionAxis" xlink:title="AssetAcquisitionAxis" />
    <link:label xlink:type="resource" xlink:label="label_AssetAcquisitionAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AssetAcquisitionAxis" xml:lang="en-US" id="label_AssetAcquisitionAxis">Asset Acquisition [Axis]</link:label>
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    <link:label xlink:type="resource" xlink:label="label_AssetAcquisitionDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AssetAcquisitionDomain" xml:lang="en-US" id="label_AssetAcquisitionDomain">Asset Acquisition [Domain]</link:label>
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    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_MultilaterationLocationAndMonitoringServiceLicensesMember" xlink:label="MultilaterationLocationAndMonitoringServiceLicensesMember" xlink:title="MultilaterationLocationAndMonitoringServiceLicensesMember" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IntangibleAssetsAndGoodwillLineItems" xlink:to="label_IntangibleAssetsAndGoodwillLineItems" xlink:title="Label : IntangibleAssetsAndGoodwillLineItems to label_IntangibleAssetsAndGoodwillLineItems" />
    <link:label xlink:type="resource" xlink:label="label_IntangibleAssetsAndGoodwillLineItems_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_IntangibleAssetsAndGoodwillLineItems_1" xml:lang="en-US" id="label_IntangibleAssetsAndGoodwillLineItems_1">Indefinite-Lived Intangible Assets [Line Items]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IntangibleAssetsAndGoodwillLineItems" xlink:to="label_IntangibleAssetsAndGoodwillLineItems_1" xlink:title="Label : IntangibleAssetsAndGoodwillLineItems to label_IntangibleAssetsAndGoodwillLineItems_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IntangibleAssetsGrossExcludingGoodwill" xlink:label="IntangibleAssetsGrossExcludingGoodwill" xlink:title="IntangibleAssetsGrossExcludingGoodwill" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IntangibleAssetsGrossExcludingGoodwill" xlink:to="label_IntangibleAssetsGrossExcludingGoodwill" xlink:title="Label : IntangibleAssetsGrossExcludingGoodwill to label_IntangibleAssetsGrossExcludingGoodwill" />
    <link:label xlink:type="resource" xlink:label="label_IntangibleAssetsGrossExcludingGoodwill_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_IntangibleAssetsGrossExcludingGoodwill_1" xml:lang="en-US" id="label_IntangibleAssetsGrossExcludingGoodwill_1">Intangible Assets, Gross (Excluding Goodwill)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IntangibleAssetsGrossExcludingGoodwill" xlink:to="label_IntangibleAssetsGrossExcludingGoodwill_1" xlink:title="Label : IntangibleAssetsGrossExcludingGoodwill to label_IntangibleAssetsGrossExcludingGoodwill_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization" xlink:label="FiniteLivedIntangibleAssetsAccumulatedAmortization" xlink:title="FiniteLivedIntangibleAssetsAccumulatedAmortization" />
    <link:label xlink:type="resource" xlink:label="label_FiniteLivedIntangibleAssetsAccumulatedAmortization" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_FiniteLivedIntangibleAssetsAccumulatedAmortization" xml:lang="en-US" id="label_FiniteLivedIntangibleAssetsAccumulatedAmortization">Accumulated Amortization</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FiniteLivedIntangibleAssetsAccumulatedAmortization" xlink:to="label_FiniteLivedIntangibleAssetsAccumulatedAmortization" xlink:title="Label : FiniteLivedIntangibleAssetsAccumulatedAmortization to label_FiniteLivedIntangibleAssetsAccumulatedAmortization" />
    <link:label xlink:type="resource" xlink:label="label_FiniteLivedIntangibleAssetsAccumulatedAmortization_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_FiniteLivedIntangibleAssetsAccumulatedAmortization_1" xml:lang="en-US" id="label_FiniteLivedIntangibleAssetsAccumulatedAmortization_1">Finite-Lived Intangible Assets, Accumulated Amortization</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FiniteLivedIntangibleAssetsAccumulatedAmortization" xlink:to="label_FiniteLivedIntangibleAssetsAccumulatedAmortization_1" xlink:title="Label : FiniteLivedIntangibleAssetsAccumulatedAmortization to label_FiniteLivedIntangibleAssetsAccumulatedAmortization_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FiniteLivedIntangibleAssetsNet" xlink:label="FiniteLivedIntangibleAssetsNet" xlink:title="FiniteLivedIntangibleAssetsNet" />
    <link:label xlink:type="resource" xlink:label="label_FiniteLivedIntangibleAssetsNet" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="label_FiniteLivedIntangibleAssetsNet" xml:lang="en-US" id="label_FiniteLivedIntangibleAssetsNet">Total</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FiniteLivedIntangibleAssetsNet" xlink:to="label_FiniteLivedIntangibleAssetsNet" xlink:title="Label : FiniteLivedIntangibleAssetsNet to label_FiniteLivedIntangibleAssetsNet" />
    <link:label xlink:type="resource" xlink:label="label_FiniteLivedIntangibleAssetsNet_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_FiniteLivedIntangibleAssetsNet_1" xml:lang="en-US" id="label_FiniteLivedIntangibleAssetsNet_1">Finite-Lived Intangible Assets, Net</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FiniteLivedIntangibleAssetsNet" xlink:to="label_FiniteLivedIntangibleAssetsNet_1" xlink:title="Label : FiniteLivedIntangibleAssetsNet to label_FiniteLivedIntangibleAssetsNet_1" />
    <link:label xlink:type="resource" xlink:label="label_FiniteLivedIntangibleAssetsNet_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_FiniteLivedIntangibleAssetsNet_2" xml:lang="en-US" id="label_FiniteLivedIntangibleAssetsNet_2">Intangible assets</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FiniteLivedIntangibleAssetsNet" xlink:to="label_FiniteLivedIntangibleAssetsNet_2" xlink:title="Label : FiniteLivedIntangibleAssetsNet to label_FiniteLivedIntangibleAssetsNet_2" />
    <link:label xlink:type="resource" xlink:label="label_FiniteLivedIntangibleAssetsNet_3" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="label_FiniteLivedIntangibleAssetsNet_3" xml:lang="en-US" id="label_FiniteLivedIntangibleAssetsNet_3">Net Carrying Value</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FiniteLivedIntangibleAssetsNet" xlink:to="label_FiniteLivedIntangibleAssetsNet_3" xlink:title="Label : FiniteLivedIntangibleAssetsNet to label_FiniteLivedIntangibleAssetsNet_3" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:label="ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:title="ScheduleOfBusinessAcquisitionsByAcquisitionTable" />
    <link:label xlink:type="resource" xlink:label="label_ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ScheduleOfBusinessAcquisitionsByAcquisitionTable" xml:lang="en-US" id="label_ScheduleOfBusinessAcquisitionsByAcquisitionTable">Schedule of Business Acquisitions, by Acquisition [Table]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:to="label_ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:title="Label : ScheduleOfBusinessAcquisitionsByAcquisitionTable to label_ScheduleOfBusinessAcquisitionsByAcquisitionTable" />
    <link:label xlink:type="resource" xlink:label="label_ScheduleOfBusinessAcquisitionsByAcquisitionTable_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ScheduleOfBusinessAcquisitionsByAcquisitionTable_1" xml:lang="en-US" id="label_ScheduleOfBusinessAcquisitionsByAcquisitionTable_1">Schedule of Business Acquisitions, by Acquisition [Table]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:to="label_ScheduleOfBusinessAcquisitionsByAcquisitionTable_1" xlink:title="Label : ScheduleOfBusinessAcquisitionsByAcquisitionTable to label_ScheduleOfBusinessAcquisitionsByAcquisitionTable_1" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_ProgenyLmsLlcMember" xlink:label="ProgenyLmsLlcMember" xlink:title="ProgenyLmsLlcMember" />
    <link:label xlink:type="resource" xlink:label="label_ProgenyLmsLlcMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_ProgenyLmsLlcMember" xml:lang="en-US" id="label_ProgenyLmsLlcMember">This member stands for the information pertaining to Progeny LMS, LLC, a wholly-owned subsidiary of reporting entity.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ProgenyLmsLlcMember" xlink:to="label_ProgenyLmsLlcMember" xlink:title="Label : ProgenyLmsLlcMember to label_ProgenyLmsLlcMember" />
    <link:label xlink:type="resource" xlink:label="label_ProgenyLmsLlcMember_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ProgenyLmsLlcMember_1" xml:lang="en-US" id="label_ProgenyLmsLlcMember_1">Progeny LMS, LLC [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ProgenyLmsLlcMember" xlink:to="label_ProgenyLmsLlcMember_1" xlink:title="Label : ProgenyLmsLlcMember to label_ProgenyLmsLlcMember_1" />
    <link:label xlink:type="resource" xlink:label="label_ProgenyLmsLlcMember_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ProgenyLmsLlcMember_2" xml:lang="en-US" id="label_ProgenyLmsLlcMember_2">Progeny LMS, LLC [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ProgenyLmsLlcMember" xlink:to="label_ProgenyLmsLlcMember_2" xlink:title="Label : ProgenyLmsLlcMember to label_ProgenyLmsLlcMember_2" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatutoryAccountingPracticesByJurisdictionAxis" xlink:label="StatutoryAccountingPracticesByJurisdictionAxis" xlink:title="StatutoryAccountingPracticesByJurisdictionAxis" />
    <link:label xlink:type="resource" xlink:label="label_StatutoryAccountingPracticesByJurisdictionAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_StatutoryAccountingPracticesByJurisdictionAxis" xml:lang="en-US" id="label_StatutoryAccountingPracticesByJurisdictionAxis">Jurisdiction [Axis]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StatutoryAccountingPracticesByJurisdictionAxis" xlink:to="label_StatutoryAccountingPracticesByJurisdictionAxis" xlink:title="Label : StatutoryAccountingPracticesByJurisdictionAxis to label_StatutoryAccountingPracticesByJurisdictionAxis" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatutoryAccountingPracticesJurisdictionDomain" xlink:label="StatutoryAccountingPracticesJurisdictionDomain" xlink:title="StatutoryAccountingPracticesJurisdictionDomain" />
    <link:label xlink:type="resource" xlink:label="label_StatutoryAccountingPracticesJurisdictionDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_StatutoryAccountingPracticesJurisdictionDomain" xml:lang="en-US" id="label_StatutoryAccountingPracticesJurisdictionDomain">Statutory Accounting Practices, Jurisdiction [Domain]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StatutoryAccountingPracticesJurisdictionDomain" xlink:to="label_StatutoryAccountingPracticesJurisdictionDomain" xlink:title="Label : StatutoryAccountingPracticesJurisdictionDomain to label_StatutoryAccountingPracticesJurisdictionDomain" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_AlamedaCourtApprovalMember" xlink:label="AlamedaCourtApprovalMember" xlink:title="AlamedaCourtApprovalMember" />
    <link:label xlink:type="resource" xlink:label="label_AlamedaCourtApprovalMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_AlamedaCourtApprovalMember" xml:lang="en-US" id="label_AlamedaCourtApprovalMember">This member stands for the information pertaining to "Alameda Court Approval".</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AlamedaCourtApprovalMember" xlink:to="label_AlamedaCourtApprovalMember" xlink:title="Label : AlamedaCourtApprovalMember to label_AlamedaCourtApprovalMember" />
    <link:label xlink:type="resource" xlink:label="label_AlamedaCourtApprovalMember_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_AlamedaCourtApprovalMember_1" xml:lang="en-US" id="label_AlamedaCourtApprovalMember_1">Alameda Court Approval [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AlamedaCourtApprovalMember" xlink:to="label_AlamedaCourtApprovalMember_1" xlink:title="Label : AlamedaCourtApprovalMember to label_AlamedaCourtApprovalMember_1" />
    <link:label xlink:type="resource" xlink:label="label_AlamedaCourtApprovalMember_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AlamedaCourtApprovalMember_2" xml:lang="en-US" id="label_AlamedaCourtApprovalMember_2">Alameda Court Approval [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AlamedaCourtApprovalMember" xlink:to="label_AlamedaCourtApprovalMember_2" xlink:title="Label : AlamedaCourtApprovalMember to label_AlamedaCourtApprovalMember_2" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_FederalCommunicationsCommissionApprovalMember" xlink:label="FederalCommunicationsCommissionApprovalMember" xlink:title="FederalCommunicationsCommissionApprovalMember" />
    <link:label xlink:type="resource" xlink:label="label_FederalCommunicationsCommissionApprovalMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_FederalCommunicationsCommissionApprovalMember" xml:lang="en-US" id="label_FederalCommunicationsCommissionApprovalMember">Federal Communications Commission (the &#x201C;FCC&#x201D;) Approval [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FederalCommunicationsCommissionApprovalMember" xlink:to="label_FederalCommunicationsCommissionApprovalMember" xlink:title="Label : FederalCommunicationsCommissionApprovalMember to label_FederalCommunicationsCommissionApprovalMember" />
    <link:label xlink:type="resource" xlink:label="label_FederalCommunicationsCommissionApprovalMember_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_FederalCommunicationsCommissionApprovalMember_1" xml:lang="en-US" id="label_FederalCommunicationsCommissionApprovalMember_1">Federal Communications Commission Approval [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FederalCommunicationsCommissionApprovalMember" xlink:to="label_FederalCommunicationsCommissionApprovalMember_1" xlink:title="Label : FederalCommunicationsCommissionApprovalMember to label_FederalCommunicationsCommissionApprovalMember_1" />
    <link:label xlink:type="resource" xlink:label="label_FederalCommunicationsCommissionApprovalMember_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_FederalCommunicationsCommissionApprovalMember_2" xml:lang="en-US" id="label_FederalCommunicationsCommissionApprovalMember_2">This member stands for the information pertaining to "Federal Communications Commission (the &#x201C;FCC&#x201D;) Approval".</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FederalCommunicationsCommissionApprovalMember" xlink:to="label_FederalCommunicationsCommissionApprovalMember_2" xlink:title="Label : FederalCommunicationsCommissionApprovalMember to label_FederalCommunicationsCommissionApprovalMember_2" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessAcquisitionLineItems" xlink:label="BusinessAcquisitionLineItems" xlink:title="BusinessAcquisitionLineItems" />
    <link:label xlink:type="resource" xlink:label="label_BusinessAcquisitionLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_BusinessAcquisitionLineItems" xml:lang="en-US" id="label_BusinessAcquisitionLineItems">Acquisition</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="BusinessAcquisitionLineItems" xlink:to="label_BusinessAcquisitionLineItems" xlink:title="Label : BusinessAcquisitionLineItems to label_BusinessAcquisitionLineItems" />
    <link:label xlink:type="resource" xlink:label="label_BusinessAcquisitionLineItems_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_BusinessAcquisitionLineItems_1" xml:lang="en-US" id="label_BusinessAcquisitionLineItems_1">Business Acquisition [Line Items]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="BusinessAcquisitionLineItems" xlink:to="label_BusinessAcquisitionLineItems_1" xlink:title="Label : BusinessAcquisitionLineItems to label_BusinessAcquisitionLineItems_1" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_AssetAcquisitionCashConsiderationPayable" xlink:label="AssetAcquisitionCashConsiderationPayable" xlink:title="AssetAcquisitionCashConsiderationPayable" />
    <link:label xlink:type="resource" xlink:label="label_AssetAcquisitionCashConsiderationPayable" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_AssetAcquisitionCashConsiderationPayable" xml:lang="en-US" id="label_AssetAcquisitionCashConsiderationPayable">The amount of cash consideration payable recognized as part of consideration transferred in asset acquisition.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AssetAcquisitionCashConsiderationPayable" xlink:to="label_AssetAcquisitionCashConsiderationPayable" xlink:title="Label : AssetAcquisitionCashConsiderationPayable to label_AssetAcquisitionCashConsiderationPayable" />
    <link:label xlink:type="resource" xlink:label="label_AssetAcquisitionCashConsiderationPayable_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AssetAcquisitionCashConsiderationPayable_1" xml:lang="en-US" id="label_AssetAcquisitionCashConsiderationPayable_1">Asset Acquisition, Cash Consideration Payable</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AssetAcquisitionCashConsiderationPayable" xlink:to="label_AssetAcquisitionCashConsiderationPayable_1" xlink:title="Label : AssetAcquisitionCashConsiderationPayable to label_AssetAcquisitionCashConsiderationPayable_1" />
    <link:label xlink:type="resource" xlink:label="label_AssetAcquisitionCashConsiderationPayable_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_AssetAcquisitionCashConsiderationPayable_2" xml:lang="en-US" id="label_AssetAcquisitionCashConsiderationPayable_2">Cash Consideration Payable</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AssetAcquisitionCashConsiderationPayable" xlink:to="label_AssetAcquisitionCashConsiderationPayable_2" xlink:title="Label : AssetAcquisitionCashConsiderationPayable to label_AssetAcquisitionCashConsiderationPayable_2" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_MaximumPeriodForCashConsiderationPayableAfterApprovalFromJurisdiction" xlink:label="MaximumPeriodForCashConsiderationPayableAfterApprovalFromJurisdiction" xlink:title="MaximumPeriodForCashConsiderationPayableAfterApprovalFromJurisdiction" />
    <link:label xlink:type="resource" xlink:label="label_MaximumPeriodForCashConsiderationPayableAfterApprovalFromJurisdiction" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_MaximumPeriodForCashConsiderationPayableAfterApprovalFromJurisdiction" xml:lang="en-US" id="label_MaximumPeriodForCashConsiderationPayableAfterApprovalFromJurisdiction">The maximum period for cash consideration payable after approval from jurisdiction in the transaction of asset acquisition.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MaximumPeriodForCashConsiderationPayableAfterApprovalFromJurisdiction" xlink:to="label_MaximumPeriodForCashConsiderationPayableAfterApprovalFromJurisdiction" xlink:title="Label : MaximumPeriodForCashConsiderationPayableAfterApprovalFromJurisdiction to label_MaximumPeriodForCashConsiderationPayableAfterApprovalFromJurisdiction" />
    <link:label xlink:type="resource" xlink:label="label_MaximumPeriodForCashConsiderationPayableAfterApprovalFromJurisdiction_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_MaximumPeriodForCashConsiderationPayableAfterApprovalFromJurisdiction_1" xml:lang="en-US" id="label_MaximumPeriodForCashConsiderationPayableAfterApprovalFromJurisdiction_1">Maximum period for cash consideration payable after approval from jurisdiction</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MaximumPeriodForCashConsiderationPayableAfterApprovalFromJurisdiction" xlink:to="label_MaximumPeriodForCashConsiderationPayableAfterApprovalFromJurisdiction_1" xlink:title="Label : MaximumPeriodForCashConsiderationPayableAfterApprovalFromJurisdiction to label_MaximumPeriodForCashConsiderationPayableAfterApprovalFromJurisdiction_1" />
    <link:label xlink:type="resource" xlink:label="label_MaximumPeriodForCashConsiderationPayableAfterApprovalFromJurisdiction_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_MaximumPeriodForCashConsiderationPayableAfterApprovalFromJurisdiction_2" xml:lang="en-US" id="label_MaximumPeriodForCashConsiderationPayableAfterApprovalFromJurisdiction_2">Maximum period for cash consideration payable after approval from jurisdiction</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MaximumPeriodForCashConsiderationPayableAfterApprovalFromJurisdiction" xlink:to="label_MaximumPeriodForCashConsiderationPayableAfterApprovalFromJurisdiction_2" xlink:title="Label : MaximumPeriodForCashConsiderationPayableAfterApprovalFromJurisdiction to label_MaximumPeriodForCashConsiderationPayableAfterApprovalFromJurisdiction_2" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetAcquisitionConsiderationTransferredEquityInterestIssuedAndIssuable" xlink:label="AssetAcquisitionConsiderationTransferredEquityInterestIssuedAndIssuable" xlink:title="AssetAcquisitionConsiderationTransferredEquityInterestIssuedAndIssuable" />
    <link:label xlink:type="resource" xlink:label="label_AssetAcquisitionConsiderationTransferredEquityInterestIssuedAndIssuable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AssetAcquisitionConsiderationTransferredEquityInterestIssuedAndIssuable" xml:lang="en-US" id="label_AssetAcquisitionConsiderationTransferredEquityInterestIssuedAndIssuable">Asset Acquisition, Consideration Transferred, Equity Interest Issued and Issuable</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AssetAcquisitionConsiderationTransferredEquityInterestIssuedAndIssuable" xlink:to="label_AssetAcquisitionConsiderationTransferredEquityInterestIssuedAndIssuable" xlink:title="Label : AssetAcquisitionConsiderationTransferredEquityInterestIssuedAndIssuable to label_AssetAcquisitionConsiderationTransferredEquityInterestIssuedAndIssuable" />
    <link:label xlink:type="resource" xlink:label="label_AssetAcquisitionConsiderationTransferredEquityInterestIssuedAndIssuable_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_AssetAcquisitionConsiderationTransferredEquityInterestIssuedAndIssuable_1" xml:lang="en-US" id="label_AssetAcquisitionConsiderationTransferredEquityInterestIssuedAndIssuable_1">Consideration Payable in shares</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AssetAcquisitionConsiderationTransferredEquityInterestIssuedAndIssuable" xlink:to="label_AssetAcquisitionConsiderationTransferredEquityInterestIssuedAndIssuable_1" xlink:title="Label : AssetAcquisitionConsiderationTransferredEquityInterestIssuedAndIssuable to label_AssetAcquisitionConsiderationTransferredEquityInterestIssuedAndIssuable_1" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_MaximumPeriodForNonCashConsiderationPayableAfterApprovalFromJurisdiction" xlink:label="MaximumPeriodForNonCashConsiderationPayableAfterApprovalFromJurisdiction" xlink:title="MaximumPeriodForNonCashConsiderationPayableAfterApprovalFromJurisdiction" />
    <link:label xlink:type="resource" xlink:label="label_MaximumPeriodForNonCashConsiderationPayableAfterApprovalFromJurisdiction" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_MaximumPeriodForNonCashConsiderationPayableAfterApprovalFromJurisdiction" xml:lang="en-US" id="label_MaximumPeriodForNonCashConsiderationPayableAfterApprovalFromJurisdiction">The maximum period for non-cash consideration payable after approval from jurisdiction in the transaction of asset acquisition.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MaximumPeriodForNonCashConsiderationPayableAfterApprovalFromJurisdiction" xlink:to="label_MaximumPeriodForNonCashConsiderationPayableAfterApprovalFromJurisdiction" xlink:title="Label : MaximumPeriodForNonCashConsiderationPayableAfterApprovalFromJurisdiction to label_MaximumPeriodForNonCashConsiderationPayableAfterApprovalFromJurisdiction" />
    <link:label xlink:type="resource" xlink:label="label_MaximumPeriodForNonCashConsiderationPayableAfterApprovalFromJurisdiction_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_MaximumPeriodForNonCashConsiderationPayableAfterApprovalFromJurisdiction_1" xml:lang="en-US" id="label_MaximumPeriodForNonCashConsiderationPayableAfterApprovalFromJurisdiction_1">Maximum period for non-cash consideration payable after approval from jurisdiction</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MaximumPeriodForNonCashConsiderationPayableAfterApprovalFromJurisdiction" xlink:to="label_MaximumPeriodForNonCashConsiderationPayableAfterApprovalFromJurisdiction_1" xlink:title="Label : MaximumPeriodForNonCashConsiderationPayableAfterApprovalFromJurisdiction to label_MaximumPeriodForNonCashConsiderationPayableAfterApprovalFromJurisdiction_1" />
    <link:label xlink:type="resource" xlink:label="label_MaximumPeriodForNonCashConsiderationPayableAfterApprovalFromJurisdiction_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_MaximumPeriodForNonCashConsiderationPayableAfterApprovalFromJurisdiction_2" xml:lang="en-US" id="label_MaximumPeriodForNonCashConsiderationPayableAfterApprovalFromJurisdiction_2">Maximum period for non-cash consideration payable after approval from jurisdiction</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MaximumPeriodForNonCashConsiderationPayableAfterApprovalFromJurisdiction" xlink:to="label_MaximumPeriodForNonCashConsiderationPayableAfterApprovalFromJurisdiction_2" xlink:title="Label : MaximumPeriodForNonCashConsiderationPayableAfterApprovalFromJurisdiction to label_MaximumPeriodForNonCashConsiderationPayableAfterApprovalFromJurisdiction_2" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetAcquisitionConsiderationTransferredContingentConsideration" xlink:label="AssetAcquisitionConsiderationTransferredContingentConsideration" xlink:title="AssetAcquisitionConsiderationTransferredContingentConsideration" />
    <link:label xlink:type="resource" xlink:label="label_AssetAcquisitionConsiderationTransferredContingentConsideration" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="label_AssetAcquisitionConsiderationTransferredContingentConsideration" xml:lang="en-US" id="label_AssetAcquisitionConsiderationTransferredContingentConsideration">Contingent consideration payable in shares</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AssetAcquisitionConsiderationTransferredContingentConsideration" xlink:to="label_AssetAcquisitionConsiderationTransferredContingentConsideration" xlink:title="Label : AssetAcquisitionConsiderationTransferredContingentConsideration to label_AssetAcquisitionConsiderationTransferredContingentConsideration" />
    <link:label xlink:type="resource" xlink:label="label_AssetAcquisitionConsiderationTransferredContingentConsideration_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AssetAcquisitionConsiderationTransferredContingentConsideration_1" xml:lang="en-US" id="label_AssetAcquisitionConsiderationTransferredContingentConsideration_1">Asset Acquisition, Consideration Transferred, Contingent Consideration</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AssetAcquisitionConsiderationTransferredContingentConsideration" xlink:to="label_AssetAcquisitionConsiderationTransferredContingentConsideration_1" xlink:title="Label : AssetAcquisitionConsiderationTransferredContingentConsideration to label_AssetAcquisitionConsiderationTransferredContingentConsideration_1" />
    <link:label xlink:type="resource" xlink:label="label_AssetAcquisitionConsiderationTransferredContingentConsideration_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_AssetAcquisitionConsiderationTransferredContingentConsideration_2" xml:lang="en-US" id="label_AssetAcquisitionConsiderationTransferredContingentConsideration_2">Amount of potential additional consideration</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AssetAcquisitionConsiderationTransferredContingentConsideration" xlink:to="label_AssetAcquisitionConsiderationTransferredContingentConsideration_2" xlink:title="Label : AssetAcquisitionConsiderationTransferredContingentConsideration to label_AssetAcquisitionConsiderationTransferredContingentConsideration_2" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetAcquisitionConsiderationTransferred" xlink:label="AssetAcquisitionConsiderationTransferred" xlink:title="AssetAcquisitionConsiderationTransferred" />
    <link:label xlink:type="resource" xlink:label="label_AssetAcquisitionConsiderationTransferred" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_AssetAcquisitionConsiderationTransferred" xml:lang="en-US" id="label_AssetAcquisitionConsiderationTransferred">Asset Acquisition, Consideration transferred</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AssetAcquisitionConsiderationTransferred" xlink:to="label_AssetAcquisitionConsiderationTransferred" xlink:title="Label : AssetAcquisitionConsiderationTransferred to label_AssetAcquisitionConsiderationTransferred" />
    <link:label xlink:type="resource" xlink:label="label_AssetAcquisitionConsiderationTransferred_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AssetAcquisitionConsiderationTransferred_1" xml:lang="en-US" id="label_AssetAcquisitionConsiderationTransferred_1">Asset Acquisition, Consideration Transferred</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AssetAcquisitionConsiderationTransferred" xlink:to="label_AssetAcquisitionConsiderationTransferred_1" xlink:title="Label : AssetAcquisitionConsiderationTransferred to label_AssetAcquisitionConsiderationTransferred_1" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_PeriodForWeightedAverageSharePriceForAssumptionOfFairValueOfSharesExpectedToBeIssued" xlink:label="PeriodForWeightedAverageSharePriceForAssumptionOfFairValueOfSharesExpectedToBeIssued" xlink:title="PeriodForWeightedAverageSharePriceForAssumptionOfFairValueOfSharesExpectedToBeIssued" />
    <link:label xlink:type="resource" xlink:label="label_PeriodForWeightedAverageSharePriceForAssumptionOfFairValueOfSharesExpectedToBeIssued" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_PeriodForWeightedAverageSharePriceForAssumptionOfFairValueOfSharesExpectedToBeIssued" xml:lang="en-US" id="label_PeriodForWeightedAverageSharePriceForAssumptionOfFairValueOfSharesExpectedToBeIssued">Period for weighted average share price for assumption of fair value of shares expected to be issued</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PeriodForWeightedAverageSharePriceForAssumptionOfFairValueOfSharesExpectedToBeIssued" xlink:to="label_PeriodForWeightedAverageSharePriceForAssumptionOfFairValueOfSharesExpectedToBeIssued" xlink:title="Label : PeriodForWeightedAverageSharePriceForAssumptionOfFairValueOfSharesExpectedToBeIssued to label_PeriodForWeightedAverageSharePriceForAssumptionOfFairValueOfSharesExpectedToBeIssued" />
    <link:label xlink:type="resource" xlink:label="label_PeriodForWeightedAverageSharePriceForAssumptionOfFairValueOfSharesExpectedToBeIssued_1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_PeriodForWeightedAverageSharePriceForAssumptionOfFairValueOfSharesExpectedToBeIssued_1" xml:lang="en-US" id="label_PeriodForWeightedAverageSharePriceForAssumptionOfFairValueOfSharesExpectedToBeIssued_1">The period for weighted average share price for assumption of fair value of shares expected to be issued in the transaction of asset acquisition.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PeriodForWeightedAverageSharePriceForAssumptionOfFairValueOfSharesExpectedToBeIssued" xlink:to="label_PeriodForWeightedAverageSharePriceForAssumptionOfFairValueOfSharesExpectedToBeIssued_1" xlink:title="Label : PeriodForWeightedAverageSharePriceForAssumptionOfFairValueOfSharesExpectedToBeIssued to label_PeriodForWeightedAverageSharePriceForAssumptionOfFairValueOfSharesExpectedToBeIssued_1" />
    <link:label xlink:type="resource" xlink:label="label_PeriodForWeightedAverageSharePriceForAssumptionOfFairValueOfSharesExpectedToBeIssued_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_PeriodForWeightedAverageSharePriceForAssumptionOfFairValueOfSharesExpectedToBeIssued_2" xml:lang="en-US" id="label_PeriodForWeightedAverageSharePriceForAssumptionOfFairValueOfSharesExpectedToBeIssued_2">Period for weighted average share price for assumption of fair value of shares expected to be issued</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PeriodForWeightedAverageSharePriceForAssumptionOfFairValueOfSharesExpectedToBeIssued" xlink:to="label_PeriodForWeightedAverageSharePriceForAssumptionOfFairValueOfSharesExpectedToBeIssued_2" xlink:title="Label : PeriodForWeightedAverageSharePriceForAssumptionOfFairValueOfSharesExpectedToBeIssued to label_PeriodForWeightedAverageSharePriceForAssumptionOfFairValueOfSharesExpectedToBeIssued_2" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_WeightedAverageSharePricePerShareUpon20DayTradedVolume" xlink:label="WeightedAverageSharePricePerShareUpon20DayTradedVolume" xlink:title="WeightedAverageSharePricePerShareUpon20DayTradedVolume" />
    <link:label xlink:type="resource" xlink:label="label_WeightedAverageSharePricePerShareUpon20DayTradedVolume" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_WeightedAverageSharePricePerShareUpon20DayTradedVolume" xml:lang="en-US" id="label_WeightedAverageSharePricePerShareUpon20DayTradedVolume">The weighted average share price per share upon 20-day traded volume for the fair value calculation of shares.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WeightedAverageSharePricePerShareUpon20DayTradedVolume" xlink:to="label_WeightedAverageSharePricePerShareUpon20DayTradedVolume" xlink:title="Label : WeightedAverageSharePricePerShareUpon20DayTradedVolume to label_WeightedAverageSharePricePerShareUpon20DayTradedVolume" />
    <link:label xlink:type="resource" xlink:label="label_WeightedAverageSharePricePerShareUpon20DayTradedVolume_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_WeightedAverageSharePricePerShareUpon20DayTradedVolume_1" xml:lang="en-US" id="label_WeightedAverageSharePricePerShareUpon20DayTradedVolume_1">Weighted average share price (in dollors per share)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WeightedAverageSharePricePerShareUpon20DayTradedVolume" xlink:to="label_WeightedAverageSharePricePerShareUpon20DayTradedVolume_1" xlink:title="Label : WeightedAverageSharePricePerShareUpon20DayTradedVolume to label_WeightedAverageSharePricePerShareUpon20DayTradedVolume_1" />
    <link:label xlink:type="resource" xlink:label="label_WeightedAverageSharePricePerShareUpon20DayTradedVolume_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_WeightedAverageSharePricePerShareUpon20DayTradedVolume_2" xml:lang="en-US" id="label_WeightedAverageSharePricePerShareUpon20DayTradedVolume_2">Weighted Average Share Price Per Share Upon 20-Day Traded Volume</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WeightedAverageSharePricePerShareUpon20DayTradedVolume" xlink:to="label_WeightedAverageSharePricePerShareUpon20DayTradedVolume_2" xlink:title="Label : WeightedAverageSharePricePerShareUpon20DayTradedVolume to label_WeightedAverageSharePricePerShareUpon20DayTradedVolume_2" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PaymentsToAcquireOtherProductiveAssets" xlink:label="PaymentsToAcquireOtherProductiveAssets" xlink:title="PaymentsToAcquireOtherProductiveAssets" />
    <link:label xlink:type="resource" xlink:label="label_PaymentsToAcquireOtherProductiveAssets" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:title="label_PaymentsToAcquireOtherProductiveAssets" xml:lang="en-US" id="label_PaymentsToAcquireOtherProductiveAssets">Payment for asset purchase agreement liability</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PaymentsToAcquireOtherProductiveAssets" xlink:to="label_PaymentsToAcquireOtherProductiveAssets" xlink:title="Label : PaymentsToAcquireOtherProductiveAssets to label_PaymentsToAcquireOtherProductiveAssets" />
    <link:label xlink:type="resource" xlink:label="label_PaymentsToAcquireOtherProductiveAssets_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_PaymentsToAcquireOtherProductiveAssets_1" xml:lang="en-US" id="label_PaymentsToAcquireOtherProductiveAssets_1">Cash consideration payment to settlement of liability</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PaymentsToAcquireOtherProductiveAssets" xlink:to="label_PaymentsToAcquireOtherProductiveAssets_1" xlink:title="Label : PaymentsToAcquireOtherProductiveAssets to label_PaymentsToAcquireOtherProductiveAssets_1" />
    <link:label xlink:type="resource" xlink:label="label_PaymentsToAcquireOtherProductiveAssets_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_PaymentsToAcquireOtherProductiveAssets_2" xml:lang="en-US" id="label_PaymentsToAcquireOtherProductiveAssets_2">Payments to Acquire Other Productive Assets</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PaymentsToAcquireOtherProductiveAssets" xlink:to="label_PaymentsToAcquireOtherProductiveAssets_2" xlink:title="Label : PaymentsToAcquireOtherProductiveAssets to label_PaymentsToAcquireOtherProductiveAssets_2" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LossContingencyAccrualAtCarryingValue" xlink:label="LossContingencyAccrualAtCarryingValue" xlink:title="LossContingencyAccrualAtCarryingValue" />
    <link:label xlink:type="resource" xlink:label="label_LossContingencyAccrualAtCarryingValue" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_LossContingencyAccrualAtCarryingValue" xml:lang="en-US" id="label_LossContingencyAccrualAtCarryingValue">Loss contingency liability, recorded amount</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LossContingencyAccrualAtCarryingValue" xlink:to="label_LossContingencyAccrualAtCarryingValue" xlink:title="Label : LossContingencyAccrualAtCarryingValue to label_LossContingencyAccrualAtCarryingValue" />
    <link:label xlink:type="resource" xlink:label="label_LossContingencyAccrualAtCarryingValue_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_LossContingencyAccrualAtCarryingValue_1" xml:lang="en-US" id="label_LossContingencyAccrualAtCarryingValue_1">Loss Contingency Accrual</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LossContingencyAccrualAtCarryingValue" xlink:to="label_LossContingencyAccrualAtCarryingValue_1" xlink:title="Label : LossContingencyAccrualAtCarryingValue to label_LossContingencyAccrualAtCarryingValue_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SharePrice" xlink:label="SharePrice" xlink:title="SharePrice" />
    <link:label xlink:type="resource" xlink:label="label_SharePrice" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="label_SharePrice" xml:lang="en-US" id="label_SharePrice">Stock price (in dollars per share)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SharePrice" xlink:to="label_SharePrice" xlink:title="Label : SharePrice to label_SharePrice" />
    <link:label xlink:type="resource" xlink:label="label_SharePrice_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_SharePrice_1" xml:lang="en-US" id="label_SharePrice_1">Purchase price per share (in Dollars per share)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SharePrice" xlink:to="label_SharePrice_1" xlink:title="Label : SharePrice to label_SharePrice_1" />
    <link:label xlink:type="resource" xlink:label="label_SharePrice_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_SharePrice_2" xml:lang="en-US" id="label_SharePrice_2">Share Price</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SharePrice" xlink:to="label_SharePrice_2" xlink:title="Label : SharePrice to label_SharePrice_2" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_AssetAcquisitionGainLossOnSettlementOfLiability" xlink:label="AssetAcquisitionGainLossOnSettlementOfLiability" xlink:title="AssetAcquisitionGainLossOnSettlementOfLiability" />
    <link:label xlink:type="resource" xlink:label="label_AssetAcquisitionGainLossOnSettlementOfLiability" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_AssetAcquisitionGainLossOnSettlementOfLiability" xml:lang="en-US" id="label_AssetAcquisitionGainLossOnSettlementOfLiability">The amount of gain (loss) on settlement of liability from asset acquisition.</link:label>
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    <link:label xlink:type="resource" xlink:label="label_AssetAcquisitionGainLossOnSettlementOfLiability_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_AssetAcquisitionGainLossOnSettlementOfLiability_1" xml:lang="en-US" id="label_AssetAcquisitionGainLossOnSettlementOfLiability_1">Gain (loss) on settlement of asset purchase agreement liability</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AssetAcquisitionGainLossOnSettlementOfLiability" xlink:to="label_AssetAcquisitionGainLossOnSettlementOfLiability_1" xlink:title="Label : AssetAcquisitionGainLossOnSettlementOfLiability to label_AssetAcquisitionGainLossOnSettlementOfLiability_1" />
    <link:label xlink:type="resource" xlink:label="label_AssetAcquisitionGainLossOnSettlementOfLiability_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AssetAcquisitionGainLossOnSettlementOfLiability_2" xml:lang="en-US" id="label_AssetAcquisitionGainLossOnSettlementOfLiability_2">Asset Acquisition, Gain (loss) on settlement of liability</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AssetAcquisitionGainLossOnSettlementOfLiability" xlink:to="label_AssetAcquisitionGainLossOnSettlementOfLiability_2" xlink:title="Label : AssetAcquisitionGainLossOnSettlementOfLiability to label_AssetAcquisitionGainLossOnSettlementOfLiability_2" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetAcquisitionConsiderationTransferredTransactionCost" xlink:label="AssetAcquisitionConsiderationTransferredTransactionCost" xlink:title="AssetAcquisitionConsiderationTransferredTransactionCost" />
    <link:label xlink:type="resource" xlink:label="label_AssetAcquisitionConsiderationTransferredTransactionCost" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AssetAcquisitionConsiderationTransferredTransactionCost" xml:lang="en-US" id="label_AssetAcquisitionConsiderationTransferredTransactionCost">Asset Acquisition, Consideration Transferred, Transaction Cost</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AssetAcquisitionConsiderationTransferredTransactionCost" xlink:to="label_AssetAcquisitionConsiderationTransferredTransactionCost" xlink:title="Label : AssetAcquisitionConsiderationTransferredTransactionCost to label_AssetAcquisitionConsiderationTransferredTransactionCost" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetAcquisitionConsiderationTransferredOtherAssets" xlink:label="AssetAcquisitionConsiderationTransferredOtherAssets" xlink:title="AssetAcquisitionConsiderationTransferredOtherAssets" />
    <link:label xlink:type="resource" xlink:label="label_AssetAcquisitionConsiderationTransferredOtherAssets" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AssetAcquisitionConsiderationTransferredOtherAssets" xml:lang="en-US" id="label_AssetAcquisitionConsiderationTransferredOtherAssets">Asset Acquisition, Consideration Transferred, Other Assets</link:label>
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    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsTable" xlink:label="ScheduleOfEquityMethodInvestmentsTable" xlink:title="ScheduleOfEquityMethodInvestmentsTable" />
    <link:label xlink:type="resource" xlink:label="label_ScheduleOfEquityMethodInvestmentsTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ScheduleOfEquityMethodInvestmentsTable" xml:lang="en-US" id="label_ScheduleOfEquityMethodInvestmentsTable">Schedule of Equity Method Investments [Table]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfEquityMethodInvestmentsTable" xlink:to="label_ScheduleOfEquityMethodInvestmentsTable" xlink:title="Label : ScheduleOfEquityMethodInvestmentsTable to label_ScheduleOfEquityMethodInvestmentsTable" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis" xlink:label="ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis" xlink:title="ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis" />
    <link:label xlink:type="resource" xlink:label="label_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis" xml:lang="en-US" id="label_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis">Investment, Name [Axis]</link:label>
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    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_EquityMethodInvesteeNameDomain" xlink:label="EquityMethodInvesteeNameDomain" xlink:title="EquityMethodInvesteeNameDomain" />
    <link:label xlink:type="resource" xlink:label="label_EquityMethodInvesteeNameDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_EquityMethodInvesteeNameDomain" xml:lang="en-US" id="label_EquityMethodInvesteeNameDomain">Investment, Name [Domain]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EquityMethodInvesteeNameDomain" xlink:to="label_EquityMethodInvesteeNameDomain" xlink:title="Label : EquityMethodInvesteeNameDomain to label_EquityMethodInvesteeNameDomain" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_MetComMember" xlink:label="MetComMember" xlink:title="MetComMember" />
    <link:label xlink:type="resource" xlink:label="label_MetComMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_MetComMember" xml:lang="en-US" id="label_MetComMember">This member stands for the information pertaining to Met Com.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MetComMember" xlink:to="label_MetComMember" xlink:title="Label : MetComMember to label_MetComMember" />
    <link:label xlink:type="resource" xlink:label="label_MetComMember_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_MetComMember_1" xml:lang="en-US" id="label_MetComMember_1">MetCom [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MetComMember" xlink:to="label_MetComMember_1" xlink:title="Label : MetComMember to label_MetComMember_1" />
    <link:label xlink:type="resource" xlink:label="label_MetComMember_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_MetComMember_2" xml:lang="en-US" id="label_MetComMember_2">Met Com [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MetComMember" xlink:to="label_MetComMember_2" xlink:title="Label : MetComMember to label_MetComMember_2" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsLineItems" xlink:label="ScheduleOfEquityMethodInvestmentsLineItems" xlink:title="ScheduleOfEquityMethodInvestmentsLineItems" />
    <link:label xlink:type="resource" xlink:label="label_ScheduleOfEquityMethodInvestmentsLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ScheduleOfEquityMethodInvestmentsLineItems" xml:lang="en-US" id="label_ScheduleOfEquityMethodInvestmentsLineItems">Schedule of Equity Method Investments [Line Items]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfEquityMethodInvestmentsLineItems" xlink:to="label_ScheduleOfEquityMethodInvestmentsLineItems" xlink:title="Label : ScheduleOfEquityMethodInvestmentsLineItems to label_ScheduleOfEquityMethodInvestmentsLineItems" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockholdersEquityOtherShares" xlink:label="StockholdersEquityOtherShares" xlink:title="StockholdersEquityOtherShares" />
    <link:label xlink:type="resource" xlink:label="label_StockholdersEquityOtherShares" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_StockholdersEquityOtherShares" xml:lang="en-US" id="label_StockholdersEquityOtherShares">Stockholders' Equity, Other Shares</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockholdersEquityOtherShares" xlink:to="label_StockholdersEquityOtherShares" xlink:title="Label : StockholdersEquityOtherShares to label_StockholdersEquityOtherShares" />
    <link:label xlink:type="resource" xlink:label="label_StockholdersEquityOtherShares_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_StockholdersEquityOtherShares_1" xml:lang="en-US" id="label_StockholdersEquityOtherShares_1">Shares representing ownership</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockholdersEquityOtherShares" xlink:to="label_StockholdersEquityOtherShares_1" xlink:title="Label : StockholdersEquityOtherShares to label_StockholdersEquityOtherShares_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EquityMethodInvestmentOwnershipPercentage" xlink:label="EquityMethodInvestmentOwnershipPercentage" xlink:title="EquityMethodInvestmentOwnershipPercentage" />
    <link:label xlink:type="resource" xlink:label="label_EquityMethodInvestmentOwnershipPercentage" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_EquityMethodInvestmentOwnershipPercentage" xml:lang="en-US" id="label_EquityMethodInvestmentOwnershipPercentage">Ownership percentage</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EquityMethodInvestmentOwnershipPercentage" xlink:to="label_EquityMethodInvestmentOwnershipPercentage" xlink:title="Label : EquityMethodInvestmentOwnershipPercentage to label_EquityMethodInvestmentOwnershipPercentage" />
    <link:label xlink:type="resource" xlink:label="label_EquityMethodInvestmentOwnershipPercentage_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_EquityMethodInvestmentOwnershipPercentage_1" xml:lang="en-US" id="label_EquityMethodInvestmentOwnershipPercentage_1">Equity Method Investment, Ownership Percentage</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EquityMethodInvestmentOwnershipPercentage" xlink:to="label_EquityMethodInvestmentOwnershipPercentage_1" xlink:title="Label : EquityMethodInvestmentOwnershipPercentage to label_EquityMethodInvestmentOwnershipPercentage_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherLongTermInvestments" xlink:label="OtherLongTermInvestments" xlink:title="OtherLongTermInvestments" />
    <link:label xlink:type="resource" xlink:label="label_OtherLongTermInvestments" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="label_OtherLongTermInvestments" xml:lang="en-US" id="label_OtherLongTermInvestments">Other long-term assets</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OtherLongTermInvestments" xlink:to="label_OtherLongTermInvestments" xlink:title="Label : OtherLongTermInvestments to label_OtherLongTermInvestments" />
    <link:label xlink:type="resource" xlink:label="label_OtherLongTermInvestments_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_OtherLongTermInvestments_1" xml:lang="en-US" id="label_OtherLongTermInvestments_1">Other Long-Term Investments</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OtherLongTermInvestments" xlink:to="label_OtherLongTermInvestments_1" xlink:title="Label : OtherLongTermInvestments to label_OtherLongTermInvestments_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherOperatingIncomeExpenseNet" xlink:label="OtherOperatingIncomeExpenseNet" xlink:title="OtherOperatingIncomeExpenseNet" />
    <link:label xlink:type="resource" xlink:label="label_OtherOperatingIncomeExpenseNet" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_OtherOperatingIncomeExpenseNet" xml:lang="en-US" id="label_OtherOperatingIncomeExpenseNet">Other Operating Income (Expense), Net</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OtherOperatingIncomeExpenseNet" xlink:to="label_OtherOperatingIncomeExpenseNet" xlink:title="Label : OtherOperatingIncomeExpenseNet to label_OtherOperatingIncomeExpenseNet" />
    <link:label xlink:type="resource" xlink:label="label_OtherOperatingIncomeExpenseNet_1" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="label_OtherOperatingIncomeExpenseNet_1" xml:lang="en-US" id="label_OtherOperatingIncomeExpenseNet_1">Other income (expenses)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OtherOperatingIncomeExpenseNet" xlink:to="label_OtherOperatingIncomeExpenseNet_1" xlink:title="Label : OtherOperatingIncomeExpenseNet to label_OtherOperatingIncomeExpenseNet_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1" xlink:label="ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1" xlink:title="ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1" />
    <link:label xlink:type="resource" xlink:label="label_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1" xlink:role="http://www.xbrl.org/2003/role/positiveTerseLabel" xlink:title="label_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1" xml:lang="en-US" id="label_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1">Exercise price of warrants issued</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1" xlink:to="label_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1" xlink:title="Label : ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1 to label_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1" />
    <link:label xlink:type="resource" xlink:label="label_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1_1" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="label_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1_1" xml:lang="en-US" id="label_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1_1">Warrants exercise price per share</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1" xlink:to="label_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1_1" xlink:title="Label : ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1 to label_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1_1" />
    <link:label xlink:type="resource" xlink:label="label_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1_2" xml:lang="en-US" id="label_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1_2">Class of Warrant or Right, Exercise Price of Warrants or Rights</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1" xlink:to="label_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1_2" xlink:title="Label : ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1 to label_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1_2" />
    <link:label xlink:type="resource" xlink:label="label_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1_3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1_3" xml:lang="en-US" id="label_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1_3">Exercise price per unit (in Dollars per share)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1" xlink:to="label_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1_3" xlink:title="Label : ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1 to label_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1_3" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherReceivables" xlink:label="OtherReceivables" xlink:title="OtherReceivables" />
    <link:label xlink:type="resource" xlink:label="label_OtherReceivables" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_OtherReceivables" xml:lang="en-US" id="label_OtherReceivables">Account receivables</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OtherReceivables" xlink:to="label_OtherReceivables" xlink:title="Label : OtherReceivables to label_OtherReceivables" />
    <link:label xlink:type="resource" xlink:label="label_OtherReceivables_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_OtherReceivables_1" xml:lang="en-US" id="label_OtherReceivables_1">Other Receivables</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OtherReceivables" xlink:to="label_OtherReceivables_1" xlink:title="Label : OtherReceivables to label_OtherReceivables_1" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_FairValueDetailsScheduleOfFinancialAssetsAndLiabilitiesMeasuredAtFairValueTable" xlink:label="FairValueDetailsScheduleOfFinancialAssetsAndLiabilitiesMeasuredAtFairValueTable" xlink:title="FairValueDetailsScheduleOfFinancialAssetsAndLiabilitiesMeasuredAtFairValueTable" />
    <link:label xlink:type="resource" xlink:label="label_FairValueDetailsScheduleOfFinancialAssetsAndLiabilitiesMeasuredAtFairValueTable" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_FairValueDetailsScheduleOfFinancialAssetsAndLiabilitiesMeasuredAtFairValueTable" xml:lang="en-US" id="label_FairValueDetailsScheduleOfFinancialAssetsAndLiabilitiesMeasuredAtFairValueTable">Schedule of information about financial assets and liabilities measured at fair value.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FairValueDetailsScheduleOfFinancialAssetsAndLiabilitiesMeasuredAtFairValueTable" xlink:to="label_FairValueDetailsScheduleOfFinancialAssetsAndLiabilitiesMeasuredAtFairValueTable" xlink:title="Label : FairValueDetailsScheduleOfFinancialAssetsAndLiabilitiesMeasuredAtFairValueTable to label_FairValueDetailsScheduleOfFinancialAssetsAndLiabilitiesMeasuredAtFairValueTable" />
    <link:label xlink:type="resource" xlink:label="label_FairValueDetailsScheduleOfFinancialAssetsAndLiabilitiesMeasuredAtFairValueTable_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_FairValueDetailsScheduleOfFinancialAssetsAndLiabilitiesMeasuredAtFairValueTable_1" xml:lang="en-US" id="label_FairValueDetailsScheduleOfFinancialAssetsAndLiabilitiesMeasuredAtFairValueTable_1">Fair Value (Details) Schedule of financial assets and liabilities measured at fair value [Table]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FairValueDetailsScheduleOfFinancialAssetsAndLiabilitiesMeasuredAtFairValueTable" xlink:to="label_FairValueDetailsScheduleOfFinancialAssetsAndLiabilitiesMeasuredAtFairValueTable_1" xlink:title="Label : FairValueDetailsScheduleOfFinancialAssetsAndLiabilitiesMeasuredAtFairValueTable to label_FairValueDetailsScheduleOfFinancialAssetsAndLiabilitiesMeasuredAtFairValueTable_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:label="FairValueByFairValueHierarchyLevelAxis" xlink:title="FairValueByFairValueHierarchyLevelAxis" />
    <link:label xlink:type="resource" xlink:label="label_FairValueByFairValueHierarchyLevelAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_FairValueByFairValueHierarchyLevelAxis" xml:lang="en-US" id="label_FairValueByFairValueHierarchyLevelAxis">Fair Value Hierarchy and NAV [Axis]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FairValueByFairValueHierarchyLevelAxis" xlink:to="label_FairValueByFairValueHierarchyLevelAxis" xlink:title="Label : FairValueByFairValueHierarchyLevelAxis to label_FairValueByFairValueHierarchyLevelAxis" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:label="FairValueMeasurementsFairValueHierarchyDomain" xlink:title="FairValueMeasurementsFairValueHierarchyDomain" />
    <link:label xlink:type="resource" xlink:label="label_FairValueMeasurementsFairValueHierarchyDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_FairValueMeasurementsFairValueHierarchyDomain" xml:lang="en-US" id="label_FairValueMeasurementsFairValueHierarchyDomain">Fair Value Hierarchy and NAV [Domain]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FairValueMeasurementsFairValueHierarchyDomain" xlink:to="label_FairValueMeasurementsFairValueHierarchyDomain" xlink:title="Label : FairValueMeasurementsFairValueHierarchyDomain to label_FairValueMeasurementsFairValueHierarchyDomain" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueInputsLevel1Member" xlink:label="FairValueInputsLevel1Member" xlink:title="FairValueInputsLevel1Member" />
    <link:label xlink:type="resource" xlink:label="label_FairValueInputsLevel1Member" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_FairValueInputsLevel1Member" xml:lang="en-US" id="label_FairValueInputsLevel1Member">Fair Value, Inputs, Level 1 [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FairValueInputsLevel1Member" xlink:to="label_FairValueInputsLevel1Member" xlink:title="Label : FairValueInputsLevel1Member to label_FairValueInputsLevel1Member" />
    <link:label xlink:type="resource" xlink:label="label_FairValueInputsLevel1Member_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_FairValueInputsLevel1Member_1" xml:lang="en-US" id="label_FairValueInputsLevel1Member_1">Level 1 [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FairValueInputsLevel1Member" xlink:to="label_FairValueInputsLevel1Member_1" xlink:title="Label : FairValueInputsLevel1Member to label_FairValueInputsLevel1Member_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueInputsLevel2Member" xlink:label="FairValueInputsLevel2Member" xlink:title="FairValueInputsLevel2Member" />
    <link:label xlink:type="resource" xlink:label="label_FairValueInputsLevel2Member" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_FairValueInputsLevel2Member" xml:lang="en-US" id="label_FairValueInputsLevel2Member">Fair Value, Inputs, Level 2 [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FairValueInputsLevel2Member" xlink:to="label_FairValueInputsLevel2Member" xlink:title="Label : FairValueInputsLevel2Member to label_FairValueInputsLevel2Member" />
    <link:label xlink:type="resource" xlink:label="label_FairValueInputsLevel2Member_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_FairValueInputsLevel2Member_1" xml:lang="en-US" id="label_FairValueInputsLevel2Member_1">Level 2 [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FairValueInputsLevel2Member" xlink:to="label_FairValueInputsLevel2Member_1" xlink:title="Label : FairValueInputsLevel2Member to label_FairValueInputsLevel2Member_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueInputsLevel3Member" xlink:label="FairValueInputsLevel3Member" xlink:title="FairValueInputsLevel3Member" />
    <link:label xlink:type="resource" xlink:label="label_FairValueInputsLevel3Member" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_FairValueInputsLevel3Member" xml:lang="en-US" id="label_FairValueInputsLevel3Member">Fair Value, Inputs, Level 3 [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FairValueInputsLevel3Member" xlink:to="label_FairValueInputsLevel3Member" xlink:title="Label : FairValueInputsLevel3Member to label_FairValueInputsLevel3Member" />
    <link:label xlink:type="resource" xlink:label="label_FairValueInputsLevel3Member_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_FairValueInputsLevel3Member_1" xml:lang="en-US" id="label_FairValueInputsLevel3Member_1">Level 3 [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FairValueInputsLevel3Member" xlink:to="label_FairValueInputsLevel3Member_1" xlink:title="Label : FairValueInputsLevel3Member to label_FairValueInputsLevel3Member_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CashAndCashEquivalentsAxis" xlink:label="CashAndCashEquivalentsAxis" xlink:title="CashAndCashEquivalentsAxis" />
    <link:label xlink:type="resource" xlink:label="label_CashAndCashEquivalentsAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CashAndCashEquivalentsAxis" xml:lang="en-US" id="label_CashAndCashEquivalentsAxis">Cash and Cash Equivalents [Axis]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CashAndCashEquivalentsAxis" xlink:to="label_CashAndCashEquivalentsAxis" xlink:title="Label : CashAndCashEquivalentsAxis to label_CashAndCashEquivalentsAxis" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember" xlink:label="RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember" xlink:title="RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember" />
    <link:label xlink:type="resource" xlink:label="label_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember" xml:lang="en-US" id="label_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember">Cash and Cash Equivalents [Domain]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember" xlink:to="label_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember" xlink:title="Label : RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember to label_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CashAndCashEquivalentsMember" xlink:label="CashAndCashEquivalentsMember" xlink:title="CashAndCashEquivalentsMember" />
    <link:label xlink:type="resource" xlink:label="label_CashAndCashEquivalentsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CashAndCashEquivalentsMember" xml:lang="en-US" id="label_CashAndCashEquivalentsMember">Cash and Cash Equivalents [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CashAndCashEquivalentsMember" xlink:to="label_CashAndCashEquivalentsMember" xlink:title="Label : CashAndCashEquivalentsMember to label_CashAndCashEquivalentsMember" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShortTermInvestmentsMember" xlink:label="ShortTermInvestmentsMember" xlink:title="ShortTermInvestmentsMember" />
    <link:label xlink:type="resource" xlink:label="label_ShortTermInvestmentsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ShortTermInvestmentsMember" xml:lang="en-US" id="label_ShortTermInvestmentsMember">Short-Term Investments [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ShortTermInvestmentsMember" xlink:to="label_ShortTermInvestmentsMember" xlink:title="Label : ShortTermInvestmentsMember to label_ShortTermInvestmentsMember" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_MoneyMarketFundsMember" xlink:label="MoneyMarketFundsMember" xlink:title="MoneyMarketFundsMember" />
    <link:label xlink:type="resource" xlink:label="label_MoneyMarketFundsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_MoneyMarketFundsMember" xml:lang="en-US" id="label_MoneyMarketFundsMember">Money Market Funds [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MoneyMarketFundsMember" xlink:to="label_MoneyMarketFundsMember" xlink:title="Label : MoneyMarketFundsMember to label_MoneyMarketFundsMember" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_USGovernmentCorporationsAndAgenciesSecuritiesMember" xlink:label="USGovernmentCorporationsAndAgenciesSecuritiesMember" xlink:title="USGovernmentCorporationsAndAgenciesSecuritiesMember" />
    <link:label xlink:type="resource" xlink:label="label_USGovernmentCorporationsAndAgenciesSecuritiesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_USGovernmentCorporationsAndAgenciesSecuritiesMember" xml:lang="en-US" id="label_USGovernmentCorporationsAndAgenciesSecuritiesMember">U.S. Government Agency Bonds [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="USGovernmentCorporationsAndAgenciesSecuritiesMember" xlink:to="label_USGovernmentCorporationsAndAgenciesSecuritiesMember" xlink:title="Label : USGovernmentCorporationsAndAgenciesSecuritiesMember to label_USGovernmentCorporationsAndAgenciesSecuritiesMember" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ClassOfWarrantOrRightAxis" xlink:label="ClassOfWarrantOrRightAxis" xlink:title="ClassOfWarrantOrRightAxis" />
    <link:label xlink:type="resource" xlink:label="label_ClassOfWarrantOrRightAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ClassOfWarrantOrRightAxis" xml:lang="en-US" id="label_ClassOfWarrantOrRightAxis">Class of Warrant or Right [Axis]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ClassOfWarrantOrRightAxis" xlink:to="label_ClassOfWarrantOrRightAxis" xlink:title="Label : ClassOfWarrantOrRightAxis to label_ClassOfWarrantOrRightAxis" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ClassOfWarrantOrRightDomain" xlink:label="ClassOfWarrantOrRightDomain" xlink:title="ClassOfWarrantOrRightDomain" />
    <link:label xlink:type="resource" xlink:label="label_ClassOfWarrantOrRightDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ClassOfWarrantOrRightDomain" xml:lang="en-US" id="label_ClassOfWarrantOrRightDomain">Class of Warrant or Right [Domain]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ClassOfWarrantOrRightDomain" xlink:to="label_ClassOfWarrantOrRightDomain" xlink:title="Label : ClassOfWarrantOrRightDomain to label_ClassOfWarrantOrRightDomain" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_PrivatePlacementWarrantsMember" xlink:label="PrivatePlacementWarrantsMember" xlink:title="PrivatePlacementWarrantsMember" />
    <link:label xlink:type="resource" xlink:label="label_PrivatePlacementWarrantsMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_PrivatePlacementWarrantsMember" xml:lang="en-US" id="label_PrivatePlacementWarrantsMember">This member stands for the information pertaining to private placement warrants.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PrivatePlacementWarrantsMember" xlink:to="label_PrivatePlacementWarrantsMember" xlink:title="Label : PrivatePlacementWarrantsMember to label_PrivatePlacementWarrantsMember" />
    <link:label xlink:type="resource" xlink:label="label_PrivatePlacementWarrantsMember_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_PrivatePlacementWarrantsMember_1" xml:lang="en-US" id="label_PrivatePlacementWarrantsMember_1">Private Placement Warrants [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PrivatePlacementWarrantsMember" xlink:to="label_PrivatePlacementWarrantsMember_1" xlink:title="Label : PrivatePlacementWarrantsMember to label_PrivatePlacementWarrantsMember_1" />
    <link:label xlink:type="resource" xlink:label="label_PrivatePlacementWarrantsMember_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_PrivatePlacementWarrantsMember_2" xml:lang="en-US" id="label_PrivatePlacementWarrantsMember_2">Private Placement Warrants [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PrivatePlacementWarrantsMember" xlink:to="label_PrivatePlacementWarrantsMember_2" xlink:title="Label : PrivatePlacementWarrantsMember to label_PrivatePlacementWarrantsMember_2" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_FairValueDetailsScheduleOfFinancialAssetsAndLiabilitiesMeasuredAtFairValueLineItems" xlink:label="FairValueDetailsScheduleOfFinancialAssetsAndLiabilitiesMeasuredAtFairValueLineItems" xlink:title="FairValueDetailsScheduleOfFinancialAssetsAndLiabilitiesMeasuredAtFairValueLineItems" />
    <link:label xlink:type="resource" xlink:label="label_FairValueDetailsScheduleOfFinancialAssetsAndLiabilitiesMeasuredAtFairValueLineItems" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_FairValueDetailsScheduleOfFinancialAssetsAndLiabilitiesMeasuredAtFairValueLineItems" xml:lang="en-US" id="label_FairValueDetailsScheduleOfFinancialAssetsAndLiabilitiesMeasuredAtFairValueLineItems">Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FairValueDetailsScheduleOfFinancialAssetsAndLiabilitiesMeasuredAtFairValueLineItems" xlink:to="label_FairValueDetailsScheduleOfFinancialAssetsAndLiabilitiesMeasuredAtFairValueLineItems" xlink:title="Label : FairValueDetailsScheduleOfFinancialAssetsAndLiabilitiesMeasuredAtFairValueLineItems to label_FairValueDetailsScheduleOfFinancialAssetsAndLiabilitiesMeasuredAtFairValueLineItems" />
    <link:label xlink:type="resource" xlink:label="label_FairValueDetailsScheduleOfFinancialAssetsAndLiabilitiesMeasuredAtFairValueLineItems_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_FairValueDetailsScheduleOfFinancialAssetsAndLiabilitiesMeasuredAtFairValueLineItems_1" xml:lang="en-US" id="label_FairValueDetailsScheduleOfFinancialAssetsAndLiabilitiesMeasuredAtFairValueLineItems_1">Fair Value (Details) - Schedule of financial assets and liabilities measured at fair value [Line Items]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FairValueDetailsScheduleOfFinancialAssetsAndLiabilitiesMeasuredAtFairValueLineItems" xlink:to="label_FairValueDetailsScheduleOfFinancialAssetsAndLiabilitiesMeasuredAtFairValueLineItems_1" xlink:title="Label : FairValueDetailsScheduleOfFinancialAssetsAndLiabilitiesMeasuredAtFairValueLineItems to label_FairValueDetailsScheduleOfFinancialAssetsAndLiabilitiesMeasuredAtFairValueLineItems_1" />
    <link:label xlink:type="resource" xlink:label="label_FairValueDetailsScheduleOfFinancialAssetsAndLiabilitiesMeasuredAtFairValueLineItems_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_FairValueDetailsScheduleOfFinancialAssetsAndLiabilitiesMeasuredAtFairValueLineItems_2" xml:lang="en-US" id="label_FairValueDetailsScheduleOfFinancialAssetsAndLiabilitiesMeasuredAtFairValueLineItems_2">Fair Value (Details) Schedule of financial assets and liabilities measured at fair value [Line Items]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FairValueDetailsScheduleOfFinancialAssetsAndLiabilitiesMeasuredAtFairValueLineItems" xlink:to="label_FairValueDetailsScheduleOfFinancialAssetsAndLiabilitiesMeasuredAtFairValueLineItems_2" xlink:title="Label : FairValueDetailsScheduleOfFinancialAssetsAndLiabilitiesMeasuredAtFairValueLineItems to label_FairValueDetailsScheduleOfFinancialAssetsAndLiabilitiesMeasuredAtFairValueLineItems_2" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CashAndCashEquivalentsFairValueDisclosure" xlink:label="CashAndCashEquivalentsFairValueDisclosure" xlink:title="CashAndCashEquivalentsFairValueDisclosure" />
    <link:label xlink:type="resource" xlink:label="label_CashAndCashEquivalentsFairValueDisclosure" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_CashAndCashEquivalentsFairValueDisclosure" xml:lang="en-US" id="label_CashAndCashEquivalentsFairValueDisclosure">Cash and Cash Equivalents</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CashAndCashEquivalentsFairValueDisclosure" xlink:to="label_CashAndCashEquivalentsFairValueDisclosure" xlink:title="Label : CashAndCashEquivalentsFairValueDisclosure to label_CashAndCashEquivalentsFairValueDisclosure" />
    <link:label xlink:type="resource" xlink:label="label_CashAndCashEquivalentsFairValueDisclosure_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CashAndCashEquivalentsFairValueDisclosure_1" xml:lang="en-US" id="label_CashAndCashEquivalentsFairValueDisclosure_1">Cash and Cash Equivalents</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CashAndCashEquivalentsFairValueDisclosure" xlink:to="label_CashAndCashEquivalentsFairValueDisclosure_1" xlink:title="Label : CashAndCashEquivalentsFairValueDisclosure to label_CashAndCashEquivalentsFairValueDisclosure_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_TradingSecuritiesDebt" xlink:label="TradingSecuritiesDebt" xlink:title="TradingSecuritiesDebt" />
    <link:label xlink:type="resource" xlink:label="label_TradingSecuritiesDebt" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_TradingSecuritiesDebt" xml:lang="en-US" id="label_TradingSecuritiesDebt">Debt Securities, Trading</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="TradingSecuritiesDebt" xlink:to="label_TradingSecuritiesDebt" xlink:title="Label : TradingSecuritiesDebt to label_TradingSecuritiesDebt" />
    <link:label xlink:type="resource" xlink:label="label_TradingSecuritiesDebt_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_TradingSecuritiesDebt_1" xml:lang="en-US" id="label_TradingSecuritiesDebt_1">Trading debt securities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="TradingSecuritiesDebt" xlink:to="label_TradingSecuritiesDebt_1" xlink:title="Label : TradingSecuritiesDebt to label_TradingSecuritiesDebt_1" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_WarrantLiabilitiesFairValueDisclosure" xlink:label="WarrantLiabilitiesFairValueDisclosure" xlink:title="WarrantLiabilitiesFairValueDisclosure" />
    <link:label xlink:type="resource" xlink:label="label_WarrantLiabilitiesFairValueDisclosure" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_WarrantLiabilitiesFairValueDisclosure" xml:lang="en-US" id="label_WarrantLiabilitiesFairValueDisclosure">Warrant Liabilities, Fair Value Disclosure</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WarrantLiabilitiesFairValueDisclosure" xlink:to="label_WarrantLiabilitiesFairValueDisclosure" xlink:title="Label : WarrantLiabilitiesFairValueDisclosure to label_WarrantLiabilitiesFairValueDisclosure" />
    <link:label xlink:type="resource" xlink:label="label_WarrantLiabilitiesFairValueDisclosure_1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_WarrantLiabilitiesFairValueDisclosure_1" xml:lang="en-US" id="label_WarrantLiabilitiesFairValueDisclosure_1">The amount of fair value portion of warrant liabilities.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WarrantLiabilitiesFairValueDisclosure" xlink:to="label_WarrantLiabilitiesFairValueDisclosure_1" xlink:title="Label : WarrantLiabilitiesFairValueDisclosure to label_WarrantLiabilitiesFairValueDisclosure_1" />
    <link:label xlink:type="resource" xlink:label="label_WarrantLiabilitiesFairValueDisclosure_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_WarrantLiabilitiesFairValueDisclosure_2" xml:lang="en-US" id="label_WarrantLiabilitiesFairValueDisclosure_2">Warrant liabilities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WarrantLiabilitiesFairValueDisclosure" xlink:to="label_WarrantLiabilitiesFairValueDisclosure_2" xlink:title="Label : WarrantLiabilitiesFairValueDisclosure to label_WarrantLiabilitiesFairValueDisclosure_2" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeLiabilities" xlink:label="DerivativeLiabilities" xlink:title="DerivativeLiabilities" />
    <link:label xlink:type="resource" xlink:label="label_DerivativeLiabilities" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_DerivativeLiabilities" xml:lang="en-US" id="label_DerivativeLiabilities">Derivative liability</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DerivativeLiabilities" xlink:to="label_DerivativeLiabilities" xlink:title="Label : DerivativeLiabilities to label_DerivativeLiabilities" />
    <link:label xlink:type="resource" xlink:label="label_DerivativeLiabilities_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DerivativeLiabilities_1" xml:lang="en-US" id="label_DerivativeLiabilities_1">Derivative Liability</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DerivativeLiabilities" xlink:to="label_DerivativeLiabilities_1" xlink:title="Label : DerivativeLiabilities to label_DerivativeLiabilities_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable" xlink:label="FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable" xlink:title="FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable" />
    <link:label xlink:type="resource" xlink:label="label_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable" xml:lang="en-US" id="label_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable">Fair Value Measurement Inputs and Valuation Techniques [Table]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable" xlink:to="label_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable" xlink:title="Label : FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable to label_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueByLiabilityClassAxis" xlink:label="FairValueByLiabilityClassAxis" xlink:title="FairValueByLiabilityClassAxis" />
    <link:label xlink:type="resource" xlink:label="label_FairValueByLiabilityClassAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_FairValueByLiabilityClassAxis" xml:lang="en-US" id="label_FairValueByLiabilityClassAxis">Liability Class [Axis]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FairValueByLiabilityClassAxis" xlink:to="label_FairValueByLiabilityClassAxis" xlink:title="Label : FairValueByLiabilityClassAxis to label_FairValueByLiabilityClassAxis" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain" xlink:label="FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain" xlink:title="FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain" />
    <link:label xlink:type="resource" xlink:label="label_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain" xml:lang="en-US" id="label_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain">Fair Value by Liability Class [Domain]</link:label>
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    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems" xlink:label="FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems" xlink:title="FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems" />
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    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_WeightedAverageSharePriceForAssumptionOfFairValueOfSharesExpectedToBeIssued" xlink:label="WeightedAverageSharePriceForAssumptionOfFairValueOfSharesExpectedToBeIssued" xlink:title="WeightedAverageSharePriceForAssumptionOfFairValueOfSharesExpectedToBeIssued" />
    <link:label xlink:type="resource" xlink:label="label_WeightedAverageSharePriceForAssumptionOfFairValueOfSharesExpectedToBeIssued" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_WeightedAverageSharePriceForAssumptionOfFairValueOfSharesExpectedToBeIssued" xml:lang="en-US" id="label_WeightedAverageSharePriceForAssumptionOfFairValueOfSharesExpectedToBeIssued">The per share amount of weighted average share price for assumption of fair value of shares expected to be issued in the transaction of asset acquisition.</link:label>
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    <link:label xlink:type="resource" xlink:label="label_SharePriceForAssumptionOfFairValueOfSharesExpectedToBeIssued" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_SharePriceForAssumptionOfFairValueOfSharesExpectedToBeIssued" xml:lang="en-US" id="label_SharePriceForAssumptionOfFairValueOfSharesExpectedToBeIssued">The per share amount of share price for assumption of fair value of shares expected to be issued in the transaction of asset acquisition.</link:label>
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    <link:label xlink:type="resource" xlink:label="label_AssetPurchaseAgreementLiabilityMember_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_AssetPurchaseAgreementLiabilityMember_1" xml:lang="en-US" id="label_AssetPurchaseAgreementLiabilityMember_1">Asset Purchase Agreement Liability</link:label>
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    <link:label xlink:type="resource" xlink:label="label_AssetPurchaseAgreementLiabilityMember_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AssetPurchaseAgreementLiabilityMember_2" xml:lang="en-US" id="label_AssetPurchaseAgreementLiabilityMember_2">Asset Purchase Agreement Liability [Member]</link:label>
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    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems" xlink:label="FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems" xlink:title="FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems" />
    <link:label xlink:type="resource" xlink:label="label_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems" xml:lang="en-US" id="label_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems">Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems" xlink:to="label_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems" xlink:title="Label : FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems to label_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems" />
    <link:label xlink:type="resource" xlink:label="label_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems_1" xml:lang="en-US" id="label_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems_1">Fair Value</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems" xlink:to="label_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems_1" xlink:title="Label : FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems to label_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward" xlink:label="FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward" xlink:title="FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward" />
    <link:label xlink:type="resource" xlink:label="label_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward" xml:lang="en-US" id="label_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward">Reconciliation of the beginning and ending balances for the liabilities measured at fair value using significant unobservable inputs (Level 3)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward" xlink:to="label_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward" xlink:title="Label : FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward to label_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward" />
    <link:label xlink:type="resource" xlink:label="label_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward_1" xml:lang="en-US" id="label_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward_1">Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward" xlink:to="label_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward_1" xlink:title="Label : FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward to label_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue" xlink:label="FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue" xlink:title="FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue" />
    <link:label xlink:type="resource" xlink:label="label_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:title="label_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue" xml:lang="en-US" id="label_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue">Ending balance for the liabilities measured at fair value using significant unobservable inputs (Level 3)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue" xlink:to="label_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue" xlink:title="Label : FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue to label_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue" />
    <link:label xlink:type="resource" xlink:label="label_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue_1" xml:lang="en-US" id="label_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue_1">Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value</link:label>
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    <link:label xlink:type="resource" xlink:label="label_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue_2" xml:lang="en-US" id="label_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue_2">Fair value of derivative liability</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue" xlink:to="label_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue_2" xlink:title="Label : FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue to label_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue_2" />
    <link:label xlink:type="resource" xlink:label="label_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue_3" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:title="label_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue_3" xml:lang="en-US" id="label_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue_3">Beginning balance for the liabilities measured at fair value using significant unobservable inputs (Level 3)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue" xlink:to="label_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue_3" xlink:title="Label : FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue to label_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue_3" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_FairValueAdjustmentOfPrivatePlacementWarrants" xlink:label="FairValueAdjustmentOfPrivatePlacementWarrants" xlink:title="FairValueAdjustmentOfPrivatePlacementWarrants" />
    <link:label xlink:type="resource" xlink:label="label_FairValueAdjustmentOfPrivatePlacementWarrants" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_FairValueAdjustmentOfPrivatePlacementWarrants" xml:lang="en-US" id="label_FairValueAdjustmentOfPrivatePlacementWarrants">Fair value adjustment of Private Placement Warrants</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FairValueAdjustmentOfPrivatePlacementWarrants" xlink:to="label_FairValueAdjustmentOfPrivatePlacementWarrants" xlink:title="Label : FairValueAdjustmentOfPrivatePlacementWarrants to label_FairValueAdjustmentOfPrivatePlacementWarrants" />
    <link:label xlink:type="resource" xlink:label="label_FairValueAdjustmentOfPrivatePlacementWarrants_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_FairValueAdjustmentOfPrivatePlacementWarrants_1" xml:lang="en-US" id="label_FairValueAdjustmentOfPrivatePlacementWarrants_1">Fair value adjustment of Private Placement Warrants</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FairValueAdjustmentOfPrivatePlacementWarrants" xlink:to="label_FairValueAdjustmentOfPrivatePlacementWarrants_1" xlink:title="Label : FairValueAdjustmentOfPrivatePlacementWarrants to label_FairValueAdjustmentOfPrivatePlacementWarrants_1" />
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    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_IncreaseThroughInitialRecognitionOfAssetPurchaseAgreementLiability" xlink:label="IncreaseThroughInitialRecognitionOfAssetPurchaseAgreementLiability" xlink:title="IncreaseThroughInitialRecognitionOfAssetPurchaseAgreementLiability" />
    <link:label xlink:type="resource" xlink:label="label_IncreaseThroughInitialRecognitionOfAssetPurchaseAgreementLiability" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_IncreaseThroughInitialRecognitionOfAssetPurchaseAgreementLiability" xml:lang="en-US" id="label_IncreaseThroughInitialRecognitionOfAssetPurchaseAgreementLiability">The increase in asset purchase agreement liability due to initial recognition.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncreaseThroughInitialRecognitionOfAssetPurchaseAgreementLiability" xlink:to="label_IncreaseThroughInitialRecognitionOfAssetPurchaseAgreementLiability" xlink:title="Label : IncreaseThroughInitialRecognitionOfAssetPurchaseAgreementLiability to label_IncreaseThroughInitialRecognitionOfAssetPurchaseAgreementLiability" />
    <link:label xlink:type="resource" xlink:label="label_IncreaseThroughInitialRecognitionOfAssetPurchaseAgreementLiability_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_IncreaseThroughInitialRecognitionOfAssetPurchaseAgreementLiability_1" xml:lang="en-US" id="label_IncreaseThroughInitialRecognitionOfAssetPurchaseAgreementLiability_1">Initial recognition of asset purchase agreement liability</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncreaseThroughInitialRecognitionOfAssetPurchaseAgreementLiability" xlink:to="label_IncreaseThroughInitialRecognitionOfAssetPurchaseAgreementLiability_1" xlink:title="Label : IncreaseThroughInitialRecognitionOfAssetPurchaseAgreementLiability to label_IncreaseThroughInitialRecognitionOfAssetPurchaseAgreementLiability_1" />
    <link:label xlink:type="resource" xlink:label="label_IncreaseThroughInitialRecognitionOfAssetPurchaseAgreementLiability_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_IncreaseThroughInitialRecognitionOfAssetPurchaseAgreementLiability_2" xml:lang="en-US" id="label_IncreaseThroughInitialRecognitionOfAssetPurchaseAgreementLiability_2">Increase through initial recognition of asset purchase agreement liability</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncreaseThroughInitialRecognitionOfAssetPurchaseAgreementLiability" xlink:to="label_IncreaseThroughInitialRecognitionOfAssetPurchaseAgreementLiability_2" xlink:title="Label : IncreaseThroughInitialRecognitionOfAssetPurchaseAgreementLiability to label_IncreaseThroughInitialRecognitionOfAssetPurchaseAgreementLiability_2" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongtermDebtTypeAxis" xlink:label="LongtermDebtTypeAxis" xlink:title="LongtermDebtTypeAxis" />
    <link:label xlink:type="resource" xlink:label="label_LongtermDebtTypeAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_LongtermDebtTypeAxis" xml:lang="en-US" id="label_LongtermDebtTypeAxis">Long-Term Debt, Type [Axis]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LongtermDebtTypeAxis" xlink:to="label_LongtermDebtTypeAxis" xlink:title="Label : LongtermDebtTypeAxis to label_LongtermDebtTypeAxis" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongtermDebtTypeDomain" xlink:label="LongtermDebtTypeDomain" xlink:title="LongtermDebtTypeDomain" />
    <link:label xlink:type="resource" xlink:label="label_LongtermDebtTypeDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_LongtermDebtTypeDomain" xml:lang="en-US" id="label_LongtermDebtTypeDomain">Long-Term Debt, Type [Domain]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LongtermDebtTypeDomain" xlink:to="label_LongtermDebtTypeDomain" xlink:title="Label : LongtermDebtTypeDomain to label_LongtermDebtTypeDomain" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_SeniorSecuredConvertibleNotesDue2028Member" xlink:label="SeniorSecuredConvertibleNotesDue2028Member" xlink:title="SeniorSecuredConvertibleNotesDue2028Member" />
    <link:label xlink:type="resource" xlink:label="label_SeniorSecuredConvertibleNotesDue2028Member" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_SeniorSecuredConvertibleNotesDue2028Member" xml:lang="en-US" id="label_SeniorSecuredConvertibleNotesDue2028Member">This member stands for the information pertaining to "Senior Secured Convertible Notes due 2028".</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SeniorSecuredConvertibleNotesDue2028Member" xlink:to="label_SeniorSecuredConvertibleNotesDue2028Member" xlink:title="Label : SeniorSecuredConvertibleNotesDue2028Member to label_SeniorSecuredConvertibleNotesDue2028Member" />
    <link:label xlink:type="resource" xlink:label="label_SeniorSecuredConvertibleNotesDue2028Member_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_SeniorSecuredConvertibleNotesDue2028Member_1" xml:lang="en-US" id="label_SeniorSecuredConvertibleNotesDue2028Member_1">Senior Secured Convertible Notes due 2028 [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SeniorSecuredConvertibleNotesDue2028Member" xlink:to="label_SeniorSecuredConvertibleNotesDue2028Member_1" xlink:title="Label : SeniorSecuredConvertibleNotesDue2028Member to label_SeniorSecuredConvertibleNotesDue2028Member_1" />
    <link:label xlink:type="resource" xlink:label="label_SeniorSecuredConvertibleNotesDue2028Member_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_SeniorSecuredConvertibleNotesDue2028Member_2" xml:lang="en-US" id="label_SeniorSecuredConvertibleNotesDue2028Member_2">Senior Secured Convertible Notes due 2028 [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SeniorSecuredConvertibleNotesDue2028Member" xlink:to="label_SeniorSecuredConvertibleNotesDue2028Member_2" xlink:title="Label : SeniorSecuredConvertibleNotesDue2028Member to label_SeniorSecuredConvertibleNotesDue2028Member_2" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NotesPayableFairValueDisclosure" xlink:label="NotesPayableFairValueDisclosure" xlink:title="NotesPayableFairValueDisclosure" />
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    <link:label xlink:type="resource" xlink:label="label_NotesPayableFairValueDisclosure_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_NotesPayableFairValueDisclosure_1" xml:lang="en-US" id="label_NotesPayableFairValueDisclosure_1">Notes Payable, Fair Value Disclosure</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NotesPayableFairValueDisclosure" xlink:to="label_NotesPayableFairValueDisclosure_1" xlink:title="Label : NotesPayableFairValueDisclosure to label_NotesPayableFairValueDisclosure_1" />
    <link:label xlink:type="resource" xlink:label="label_NotesPayableFairValueDisclosure_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_NotesPayableFairValueDisclosure_2" xml:lang="en-US" id="label_NotesPayableFairValueDisclosure_2">Fair value of debt</link:label>
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    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentTable" xlink:label="DebtInstrumentTable" xlink:title="DebtInstrumentTable" />
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    <link:label xlink:type="resource" xlink:label="label_DebtInstrumentTable_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DebtInstrumentTable_1" xml:lang="en-US" id="label_DebtInstrumentTable_1">Schedule of Long-term Debt Instruments [Table]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtInstrumentTable" xlink:to="label_DebtInstrumentTable_1" xlink:title="Label : DebtInstrumentTable to label_DebtInstrumentTable_1" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_AgreementTypeAxis" xlink:label="AgreementTypeAxis" xlink:title="AgreementTypeAxis" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AgreementTypeAxis" xlink:to="label_AgreementTypeAxis" xlink:title="Label : AgreementTypeAxis to label_AgreementTypeAxis" />
    <link:label xlink:type="resource" xlink:label="label_AgreementTypeAxis_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AgreementTypeAxis_1" xml:lang="en-US" id="label_AgreementTypeAxis_1">Agreement type [axis]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AgreementTypeAxis" xlink:to="label_AgreementTypeAxis_1" xlink:title="Label : AgreementTypeAxis to label_AgreementTypeAxis_1" />
    <link:label xlink:type="resource" xlink:label="label_AgreementTypeAxis_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_AgreementTypeAxis_2" xml:lang="en-US" id="label_AgreementTypeAxis_2">Agreement type [axis]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AgreementTypeAxis" xlink:to="label_AgreementTypeAxis_2" xlink:title="Label : AgreementTypeAxis to label_AgreementTypeAxis_2" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_AgreementTypeDomain" xlink:label="AgreementTypeDomain" xlink:title="AgreementTypeDomain" />
    <link:label xlink:type="resource" xlink:label="label_AgreementTypeDomain" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_AgreementTypeDomain" xml:lang="en-US" id="label_AgreementTypeDomain">Identification of agreement type.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AgreementTypeDomain" xlink:to="label_AgreementTypeDomain" xlink:title="Label : AgreementTypeDomain to label_AgreementTypeDomain" />
    <link:label xlink:type="resource" xlink:label="label_AgreementTypeDomain_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AgreementTypeDomain_1" xml:lang="en-US" id="label_AgreementTypeDomain_1">Agreement type [domain]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AgreementTypeDomain" xlink:to="label_AgreementTypeDomain_1" xlink:title="Label : AgreementTypeDomain to label_AgreementTypeDomain_1" />
    <link:label xlink:type="resource" xlink:label="label_AgreementTypeDomain_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_AgreementTypeDomain_2" xml:lang="en-US" id="label_AgreementTypeDomain_2">Agreement type [domain]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AgreementTypeDomain" xlink:to="label_AgreementTypeDomain_2" xlink:title="Label : AgreementTypeDomain to label_AgreementTypeDomain_2" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_NotePurchaseAgreementMember" xlink:label="NotePurchaseAgreementMember" xlink:title="NotePurchaseAgreementMember" />
    <link:label xlink:type="resource" xlink:label="label_NotePurchaseAgreementMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_NotePurchaseAgreementMember" xml:lang="en-US" id="label_NotePurchaseAgreementMember">This member stands for the information pertaining to "Note Purchase Agreement".</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NotePurchaseAgreementMember" xlink:to="label_NotePurchaseAgreementMember" xlink:title="Label : NotePurchaseAgreementMember to label_NotePurchaseAgreementMember" />
    <link:label xlink:type="resource" xlink:label="label_NotePurchaseAgreementMember_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_NotePurchaseAgreementMember_1" xml:lang="en-US" id="label_NotePurchaseAgreementMember_1">Note Purchase Agreement [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NotePurchaseAgreementMember" xlink:to="label_NotePurchaseAgreementMember_1" xlink:title="Label : NotePurchaseAgreementMember to label_NotePurchaseAgreementMember_1" />
    <link:label xlink:type="resource" xlink:label="label_NotePurchaseAgreementMember_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_NotePurchaseAgreementMember_2" xml:lang="en-US" id="label_NotePurchaseAgreementMember_2">Note Purchase Agreement [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NotePurchaseAgreementMember" xlink:to="label_NotePurchaseAgreementMember_2" xlink:title="Label : NotePurchaseAgreementMember to label_NotePurchaseAgreementMember_2" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_IndentureAndSecurityAgreementMember" xlink:label="IndentureAndSecurityAgreementMember" xlink:title="IndentureAndSecurityAgreementMember" />
    <link:label xlink:type="resource" xlink:label="label_IndentureAndSecurityAgreementMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_IndentureAndSecurityAgreementMember" xml:lang="en-US" id="label_IndentureAndSecurityAgreementMember">This member stands for the information pertaining to "Indenture and Security Agreement".</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IndentureAndSecurityAgreementMember" xlink:to="label_IndentureAndSecurityAgreementMember" xlink:title="Label : IndentureAndSecurityAgreementMember to label_IndentureAndSecurityAgreementMember" />
    <link:label xlink:type="resource" xlink:label="label_IndentureAndSecurityAgreementMember_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_IndentureAndSecurityAgreementMember_1" xml:lang="en-US" id="label_IndentureAndSecurityAgreementMember_1">Indenture and Security Agreement [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IndentureAndSecurityAgreementMember" xlink:to="label_IndentureAndSecurityAgreementMember_1" xlink:title="Label : IndentureAndSecurityAgreementMember to label_IndentureAndSecurityAgreementMember_1" />
    <link:label xlink:type="resource" xlink:label="label_IndentureAndSecurityAgreementMember_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_IndentureAndSecurityAgreementMember_2" xml:lang="en-US" id="label_IndentureAndSecurityAgreementMember_2">Indenture and Security Agreement [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IndentureAndSecurityAgreementMember" xlink:to="label_IndentureAndSecurityAgreementMember_2" xlink:title="Label : IndentureAndSecurityAgreementMember to label_IndentureAndSecurityAgreementMember_2" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_SeniorSecuredNotesDue2026Member" xlink:label="SeniorSecuredNotesDue2026Member" xlink:title="SeniorSecuredNotesDue2026Member" />
    <link:label xlink:type="resource" xlink:label="label_SeniorSecuredNotesDue2026Member" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_SeniorSecuredNotesDue2026Member" xml:lang="en-US" id="label_SeniorSecuredNotesDue2026Member">This member stands for the information pertaining to "Senior Secured Notes due 2026".</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SeniorSecuredNotesDue2026Member" xlink:to="label_SeniorSecuredNotesDue2026Member" xlink:title="Label : SeniorSecuredNotesDue2026Member to label_SeniorSecuredNotesDue2026Member" />
    <link:label xlink:type="resource" xlink:label="label_SeniorSecuredNotesDue2026Member_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_SeniorSecuredNotesDue2026Member_1" xml:lang="en-US" id="label_SeniorSecuredNotesDue2026Member_1">Senior Secured Notes due 2026 [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SeniorSecuredNotesDue2026Member" xlink:to="label_SeniorSecuredNotesDue2026Member_1" xlink:title="Label : SeniorSecuredNotesDue2026Member to label_SeniorSecuredNotesDue2026Member_1" />
    <link:label xlink:type="resource" xlink:label="label_SeniorSecuredNotesDue2026Member_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_SeniorSecuredNotesDue2026Member_2" xml:lang="en-US" id="label_SeniorSecuredNotesDue2026Member_2">Senior Secured Notes due 2026 [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SeniorSecuredNotesDue2026Member" xlink:to="label_SeniorSecuredNotesDue2026Member_2" xlink:title="Label : SeniorSecuredNotesDue2026Member to label_SeniorSecuredNotesDue2026Member_2" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_DebtWarrants2026Member" xlink:label="DebtWarrants2026Member" xlink:title="DebtWarrants2026Member" />
    <link:label xlink:type="resource" xlink:label="label_DebtWarrants2026Member" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_DebtWarrants2026Member" xml:lang="en-US" id="label_DebtWarrants2026Member">This member stands for the information pertaining to "Debt Warrants 2026".</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtWarrants2026Member" xlink:to="label_DebtWarrants2026Member" xlink:title="Label : DebtWarrants2026Member to label_DebtWarrants2026Member" />
    <link:label xlink:type="resource" xlink:label="label_DebtWarrants2026Member_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_DebtWarrants2026Member_1" xml:lang="en-US" id="label_DebtWarrants2026Member_1">Debt Warrants 2026 [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtWarrants2026Member" xlink:to="label_DebtWarrants2026Member_1" xlink:title="Label : DebtWarrants2026Member to label_DebtWarrants2026Member_1" />
    <link:label xlink:type="resource" xlink:label="label_DebtWarrants2026Member_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DebtWarrants2026Member_2" xml:lang="en-US" id="label_DebtWarrants2026Member_2">Debt Warrants 2026 [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtWarrants2026Member" xlink:to="label_DebtWarrants2026Member_2" xlink:title="Label : DebtWarrants2026Member to label_DebtWarrants2026Member_2" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_DebtWarrants2028Member" xlink:label="DebtWarrants2028Member" xlink:title="DebtWarrants2028Member" />
    <link:label xlink:type="resource" xlink:label="label_DebtWarrants2028Member" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_DebtWarrants2028Member" xml:lang="en-US" id="label_DebtWarrants2028Member">This member stands for the information pertaining to "Debt Warrants 2028".</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtWarrants2028Member" xlink:to="label_DebtWarrants2028Member" xlink:title="Label : DebtWarrants2028Member to label_DebtWarrants2028Member" />
    <link:label xlink:type="resource" xlink:label="label_DebtWarrants2028Member_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_DebtWarrants2028Member_1" xml:lang="en-US" id="label_DebtWarrants2028Member_1">Debt Warrants 2028 [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtWarrants2028Member" xlink:to="label_DebtWarrants2028Member_1" xlink:title="Label : DebtWarrants2028Member to label_DebtWarrants2028Member_1" />
    <link:label xlink:type="resource" xlink:label="label_DebtWarrants2028Member_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DebtWarrants2028Member_2" xml:lang="en-US" id="label_DebtWarrants2028Member_2">Debt Warrants 2028 [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtWarrants2028Member" xlink:to="label_DebtWarrants2028Member_2" xlink:title="Label : DebtWarrants2028Member to label_DebtWarrants2028Member_2" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_CommonStockPurchaseWarrantsMember" xlink:label="CommonStockPurchaseWarrantsMember" xlink:title="CommonStockPurchaseWarrantsMember" />
    <link:label xlink:type="resource" xlink:label="label_CommonStockPurchaseWarrantsMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_CommonStockPurchaseWarrantsMember" xml:lang="en-US" id="label_CommonStockPurchaseWarrantsMember">This member stands for the information pertaining to "Common stock purchase warrants".</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CommonStockPurchaseWarrantsMember" xlink:to="label_CommonStockPurchaseWarrantsMember" xlink:title="Label : CommonStockPurchaseWarrantsMember to label_CommonStockPurchaseWarrantsMember" />
    <link:label xlink:type="resource" xlink:label="label_CommonStockPurchaseWarrantsMember_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_CommonStockPurchaseWarrantsMember_1" xml:lang="en-US" id="label_CommonStockPurchaseWarrantsMember_1">Common stock purchase warrants [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CommonStockPurchaseWarrantsMember" xlink:to="label_CommonStockPurchaseWarrantsMember_1" xlink:title="Label : CommonStockPurchaseWarrantsMember to label_CommonStockPurchaseWarrantsMember_1" />
    <link:label xlink:type="resource" xlink:label="label_CommonStockPurchaseWarrantsMember_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CommonStockPurchaseWarrantsMember_2" xml:lang="en-US" id="label_CommonStockPurchaseWarrantsMember_2">Common stock purchase warrants [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CommonStockPurchaseWarrantsMember" xlink:to="label_CommonStockPurchaseWarrantsMember_2" xlink:title="Label : CommonStockPurchaseWarrantsMember to label_CommonStockPurchaseWarrantsMember_2" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SubsidiarySaleOfStockAxis" xlink:label="SubsidiarySaleOfStockAxis" xlink:title="SubsidiarySaleOfStockAxis" />
    <link:label xlink:type="resource" xlink:label="label_SubsidiarySaleOfStockAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_SubsidiarySaleOfStockAxis" xml:lang="en-US" id="label_SubsidiarySaleOfStockAxis">Sale of Stock [Axis]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SubsidiarySaleOfStockAxis" xlink:to="label_SubsidiarySaleOfStockAxis" xlink:title="Label : SubsidiarySaleOfStockAxis to label_SubsidiarySaleOfStockAxis" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SaleOfStockNameOfTransactionDomain" xlink:label="SaleOfStockNameOfTransactionDomain" xlink:title="SaleOfStockNameOfTransactionDomain" />
    <link:label xlink:type="resource" xlink:label="label_SaleOfStockNameOfTransactionDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_SaleOfStockNameOfTransactionDomain" xml:lang="en-US" id="label_SaleOfStockNameOfTransactionDomain">Sale of Stock [Domain]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SaleOfStockNameOfTransactionDomain" xlink:to="label_SaleOfStockNameOfTransactionDomain" xlink:title="Label : SaleOfStockNameOfTransactionDomain to label_SaleOfStockNameOfTransactionDomain" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PrivatePlacementMember" xlink:label="PrivatePlacementMember" xlink:title="PrivatePlacementMember" />
    <link:label xlink:type="resource" xlink:label="label_PrivatePlacementMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_PrivatePlacementMember" xml:lang="en-US" id="label_PrivatePlacementMember">Private Placement [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PrivatePlacementMember" xlink:to="label_PrivatePlacementMember" xlink:title="Label : PrivatePlacementMember to label_PrivatePlacementMember" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis" xlink:label="RelatedPartyTransactionsByRelatedPartyAxis" xlink:title="RelatedPartyTransactionsByRelatedPartyAxis" />
    <link:label xlink:type="resource" xlink:label="label_RelatedPartyTransactionsByRelatedPartyAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_RelatedPartyTransactionsByRelatedPartyAxis" xml:lang="en-US" id="label_RelatedPartyTransactionsByRelatedPartyAxis">Related Party [Axis]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RelatedPartyTransactionsByRelatedPartyAxis" xlink:to="label_RelatedPartyTransactionsByRelatedPartyAxis" xlink:title="Label : RelatedPartyTransactionsByRelatedPartyAxis to label_RelatedPartyTransactionsByRelatedPartyAxis" />
    <link:label xlink:type="resource" xlink:label="label_RelatedPartyTransactionsByRelatedPartyAxis_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_RelatedPartyTransactionsByRelatedPartyAxis_1" xml:lang="en-US" id="label_RelatedPartyTransactionsByRelatedPartyAxis_1">Related and Nonrelated Parties [Axis]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RelatedPartyTransactionsByRelatedPartyAxis" xlink:to="label_RelatedPartyTransactionsByRelatedPartyAxis_1" xlink:title="Label : RelatedPartyTransactionsByRelatedPartyAxis to label_RelatedPartyTransactionsByRelatedPartyAxis_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RelatedPartyDomain" xlink:label="RelatedPartyDomain" xlink:title="RelatedPartyDomain" />
    <link:label xlink:type="resource" xlink:label="label_RelatedPartyDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_RelatedPartyDomain" xml:lang="en-US" id="label_RelatedPartyDomain">Related and Nonrelated Parties [Domain]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RelatedPartyDomain" xlink:to="label_RelatedPartyDomain" xlink:title="Label : RelatedPartyDomain to label_RelatedPartyDomain" />
    <link:label xlink:type="resource" xlink:label="label_RelatedPartyDomain_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_RelatedPartyDomain_1" xml:lang="en-US" id="label_RelatedPartyDomain_1">Related Party [Domain]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RelatedPartyDomain" xlink:to="label_RelatedPartyDomain_1" xlink:title="Label : RelatedPartyDomain to label_RelatedPartyDomain_1" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_PurchasersMember" xlink:label="PurchasersMember" xlink:title="PurchasersMember" />
    <link:label xlink:type="resource" xlink:label="label_PurchasersMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_PurchasersMember" xml:lang="en-US" id="label_PurchasersMember">This member stands for the information pertaining to "Purchasers".</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PurchasersMember" xlink:to="label_PurchasersMember" xlink:title="Label : PurchasersMember to label_PurchasersMember" />
    <link:label xlink:type="resource" xlink:label="label_PurchasersMember_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_PurchasersMember_1" xml:lang="en-US" id="label_PurchasersMember_1">Purchasers [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PurchasersMember" xlink:to="label_PurchasersMember_1" xlink:title="Label : PurchasersMember to label_PurchasersMember_1" />
    <link:label xlink:type="resource" xlink:label="label_PurchasersMember_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_PurchasersMember_2" xml:lang="en-US" id="label_PurchasersMember_2">Purchasers [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PurchasersMember" xlink:to="label_PurchasersMember_2" xlink:title="Label : PurchasersMember to label_PurchasersMember_2" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_GuarantorsAndGlasTrustCompanyLlcMember" xlink:label="GuarantorsAndGlasTrustCompanyLlcMember" xlink:title="GuarantorsAndGlasTrustCompanyLlcMember" />
    <link:label xlink:type="resource" xlink:label="label_GuarantorsAndGlasTrustCompanyLlcMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_GuarantorsAndGlasTrustCompanyLlcMember" xml:lang="en-US" id="label_GuarantorsAndGlasTrustCompanyLlcMember">This member stands for the information pertaining to "Guarantors and GLAS Trust Company, LLC".</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="GuarantorsAndGlasTrustCompanyLlcMember" xlink:to="label_GuarantorsAndGlasTrustCompanyLlcMember" xlink:title="Label : GuarantorsAndGlasTrustCompanyLlcMember to label_GuarantorsAndGlasTrustCompanyLlcMember" />
    <link:label xlink:type="resource" xlink:label="label_GuarantorsAndGlasTrustCompanyLlcMember_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_GuarantorsAndGlasTrustCompanyLlcMember_1" xml:lang="en-US" id="label_GuarantorsAndGlasTrustCompanyLlcMember_1">Guarantors and GLAS Trust Company, LLC [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="GuarantorsAndGlasTrustCompanyLlcMember" xlink:to="label_GuarantorsAndGlasTrustCompanyLlcMember_1" xlink:title="Label : GuarantorsAndGlasTrustCompanyLlcMember to label_GuarantorsAndGlasTrustCompanyLlcMember_1" />
    <link:label xlink:type="resource" xlink:label="label_GuarantorsAndGlasTrustCompanyLlcMember_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_GuarantorsAndGlasTrustCompanyLlcMember_2" xml:lang="en-US" id="label_GuarantorsAndGlasTrustCompanyLlcMember_2">Guarantors and GLAS Trust Company, LLC [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="GuarantorsAndGlasTrustCompanyLlcMember" xlink:to="label_GuarantorsAndGlasTrustCompanyLlcMember_2" xlink:title="Label : GuarantorsAndGlasTrustCompanyLlcMember to label_GuarantorsAndGlasTrustCompanyLlcMember_2" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentLineItems" xlink:label="DebtInstrumentLineItems" xlink:title="DebtInstrumentLineItems" />
    <link:label xlink:type="resource" xlink:label="label_DebtInstrumentLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DebtInstrumentLineItems" xml:lang="en-US" id="label_DebtInstrumentLineItems">Debt Instrument [Line Items]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtInstrumentLineItems" xlink:to="label_DebtInstrumentLineItems" xlink:title="Label : DebtInstrumentLineItems to label_DebtInstrumentLineItems" />
    <link:label xlink:type="resource" xlink:label="label_DebtInstrumentLineItems_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_DebtInstrumentLineItems_1" xml:lang="en-US" id="label_DebtInstrumentLineItems_1">Long term debt</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtInstrumentLineItems" xlink:to="label_DebtInstrumentLineItems_1" xlink:title="Label : DebtInstrumentLineItems to label_DebtInstrumentLineItems_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentFaceAmount" xlink:label="DebtInstrumentFaceAmount" xlink:title="DebtInstrumentFaceAmount" />
    <link:label xlink:type="resource" xlink:label="label_DebtInstrumentFaceAmount" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_DebtInstrumentFaceAmount" xml:lang="en-US" id="label_DebtInstrumentFaceAmount">Debt Instrument, Aggregate principal amount</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtInstrumentFaceAmount" xlink:to="label_DebtInstrumentFaceAmount" xlink:title="Label : DebtInstrumentFaceAmount to label_DebtInstrumentFaceAmount" />
    <link:label xlink:type="resource" xlink:label="label_DebtInstrumentFaceAmount_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DebtInstrumentFaceAmount_1" xml:lang="en-US" id="label_DebtInstrumentFaceAmount_1">Debt Instrument, Face Amount</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtInstrumentFaceAmount" xlink:to="label_DebtInstrumentFaceAmount_1" xlink:title="Label : DebtInstrumentFaceAmount to label_DebtInstrumentFaceAmount_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage" xlink:label="DebtInstrumentInterestRateStatedPercentage" xlink:title="DebtInstrumentInterestRateStatedPercentage" />
    <link:label xlink:type="resource" xlink:label="label_DebtInstrumentInterestRateStatedPercentage" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_DebtInstrumentInterestRateStatedPercentage" xml:lang="en-US" id="label_DebtInstrumentInterestRateStatedPercentage">Debt Instrument, Interest Rate, Stated Percentage</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtInstrumentInterestRateStatedPercentage" xlink:to="label_DebtInstrumentInterestRateStatedPercentage" xlink:title="Label : DebtInstrumentInterestRateStatedPercentage to label_DebtInstrumentInterestRateStatedPercentage" />
    <link:label xlink:type="resource" xlink:label="label_DebtInstrumentInterestRateStatedPercentage_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DebtInstrumentInterestRateStatedPercentage_1" xml:lang="en-US" id="label_DebtInstrumentInterestRateStatedPercentage_1">Debt Instrument, Interest Rate, Stated Percentage</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtInstrumentInterestRateStatedPercentage" xlink:to="label_DebtInstrumentInterestRateStatedPercentage_1" xlink:title="Label : DebtInstrumentInterestRateStatedPercentage to label_DebtInstrumentInterestRateStatedPercentage_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommonStockParOrStatedValuePerShare" xlink:label="CommonStockParOrStatedValuePerShare" xlink:title="CommonStockParOrStatedValuePerShare" />
    <link:label xlink:type="resource" xlink:label="label_CommonStockParOrStatedValuePerShare" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CommonStockParOrStatedValuePerShare" xml:lang="en-US" id="label_CommonStockParOrStatedValuePerShare">Common Stock, Par or Stated Value Per Share</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CommonStockParOrStatedValuePerShare" xlink:to="label_CommonStockParOrStatedValuePerShare" xlink:title="Label : CommonStockParOrStatedValuePerShare to label_CommonStockParOrStatedValuePerShare" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentMaturityDate" xlink:label="DebtInstrumentMaturityDate" xlink:title="DebtInstrumentMaturityDate" />
    <link:label xlink:type="resource" xlink:label="label_DebtInstrumentMaturityDate" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_DebtInstrumentMaturityDate" xml:lang="en-US" id="label_DebtInstrumentMaturityDate">Debt Instrument, Maturity Date</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtInstrumentMaturityDate" xlink:to="label_DebtInstrumentMaturityDate" xlink:title="Label : DebtInstrumentMaturityDate to label_DebtInstrumentMaturityDate" />
    <link:label xlink:type="resource" xlink:label="label_DebtInstrumentMaturityDate_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DebtInstrumentMaturityDate_1" xml:lang="en-US" id="label_DebtInstrumentMaturityDate_1">Debt Instrument, Maturity Date</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtInstrumentMaturityDate" xlink:to="label_DebtInstrumentMaturityDate_1" xlink:title="Label : DebtInstrumentMaturityDate to label_DebtInstrumentMaturityDate_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights" xlink:label="ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights" xlink:title="ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights" />
    <link:label xlink:type="resource" xlink:label="label_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights" xml:lang="en-US" id="label_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights">Class of Warrant or Right, Number of Securities Called by Warrants or Rights</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights" xlink:to="label_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights" xlink:title="Label : ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights to label_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights" />
    <link:label xlink:type="resource" xlink:label="label_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights_1" xml:lang="en-US" id="label_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights_1">Common stock issuable for warrant exercise</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights" xlink:to="label_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights_1" xlink:title="Label : ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights to label_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentFrequencyOfPeriodicPayment" xlink:label="DebtInstrumentFrequencyOfPeriodicPayment" xlink:title="DebtInstrumentFrequencyOfPeriodicPayment" />
    <link:label xlink:type="resource" xlink:label="label_DebtInstrumentFrequencyOfPeriodicPayment" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_DebtInstrumentFrequencyOfPeriodicPayment" xml:lang="en-US" id="label_DebtInstrumentFrequencyOfPeriodicPayment">Debt Instrument, Frequency of Periodic Payment</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtInstrumentFrequencyOfPeriodicPayment" xlink:to="label_DebtInstrumentFrequencyOfPeriodicPayment" xlink:title="Label : DebtInstrumentFrequencyOfPeriodicPayment to label_DebtInstrumentFrequencyOfPeriodicPayment" />
    <link:label xlink:type="resource" xlink:label="label_DebtInstrumentFrequencyOfPeriodicPayment_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DebtInstrumentFrequencyOfPeriodicPayment_1" xml:lang="en-US" id="label_DebtInstrumentFrequencyOfPeriodicPayment_1">Debt Instrument, Frequency of Periodic Payment</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtInstrumentFrequencyOfPeriodicPayment" xlink:to="label_DebtInstrumentFrequencyOfPeriodicPayment_1" xlink:title="Label : DebtInstrumentFrequencyOfPeriodicPayment to label_DebtInstrumentFrequencyOfPeriodicPayment_1" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_PercentageOfAccruedAndUnpaidInterestOnDebt" xlink:label="PercentageOfAccruedAndUnpaidInterestOnDebt" xlink:title="PercentageOfAccruedAndUnpaidInterestOnDebt" />
    <link:label xlink:type="resource" xlink:label="label_PercentageOfAccruedAndUnpaidInterestOnDebt" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_PercentageOfAccruedAndUnpaidInterestOnDebt" xml:lang="en-US" id="label_PercentageOfAccruedAndUnpaidInterestOnDebt">The percentage of accrued and unpaid interest on debt issued.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PercentageOfAccruedAndUnpaidInterestOnDebt" xlink:to="label_PercentageOfAccruedAndUnpaidInterestOnDebt" xlink:title="Label : PercentageOfAccruedAndUnpaidInterestOnDebt to label_PercentageOfAccruedAndUnpaidInterestOnDebt" />
    <link:label xlink:type="resource" xlink:label="label_PercentageOfAccruedAndUnpaidInterestOnDebt_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_PercentageOfAccruedAndUnpaidInterestOnDebt_1" xml:lang="en-US" id="label_PercentageOfAccruedAndUnpaidInterestOnDebt_1">Percentage of accrued and unpaid interest on debt</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PercentageOfAccruedAndUnpaidInterestOnDebt" xlink:to="label_PercentageOfAccruedAndUnpaidInterestOnDebt_1" xlink:title="Label : PercentageOfAccruedAndUnpaidInterestOnDebt to label_PercentageOfAccruedAndUnpaidInterestOnDebt_1" />
    <link:label xlink:type="resource" xlink:label="label_PercentageOfAccruedAndUnpaidInterestOnDebt_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_PercentageOfAccruedAndUnpaidInterestOnDebt_2" xml:lang="en-US" id="label_PercentageOfAccruedAndUnpaidInterestOnDebt_2">Percentage of accrued and unpaid interest on debt</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PercentageOfAccruedAndUnpaidInterestOnDebt" xlink:to="label_PercentageOfAccruedAndUnpaidInterestOnDebt_2" xlink:title="Label : PercentageOfAccruedAndUnpaidInterestOnDebt to label_PercentageOfAccruedAndUnpaidInterestOnDebt_2" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ClassOfWarrantOrRightOutstanding" xlink:label="ClassOfWarrantOrRightOutstanding" xlink:title="ClassOfWarrantOrRightOutstanding" />
    <link:label xlink:type="resource" xlink:label="label_ClassOfWarrantOrRightOutstanding" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ClassOfWarrantOrRightOutstanding" xml:lang="en-US" id="label_ClassOfWarrantOrRightOutstanding">Class of Warrant or Right, Outstanding</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ClassOfWarrantOrRightOutstanding" xlink:to="label_ClassOfWarrantOrRightOutstanding" xlink:title="Label : ClassOfWarrantOrRightOutstanding to label_ClassOfWarrantOrRightOutstanding" />
    <link:label xlink:type="resource" xlink:label="label_ClassOfWarrantOrRightOutstanding_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ClassOfWarrantOrRightOutstanding_1" xml:lang="en-US" id="label_ClassOfWarrantOrRightOutstanding_1">Warrants outstanding</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ClassOfWarrantOrRightOutstanding" xlink:to="label_ClassOfWarrantOrRightOutstanding_1" xlink:title="Label : ClassOfWarrantOrRightOutstanding to label_ClassOfWarrantOrRightOutstanding_1" />
    <link:label xlink:type="resource" xlink:label="label_ClassOfWarrantOrRightOutstanding_2" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="label_ClassOfWarrantOrRightOutstanding_2" xml:lang="en-US" id="label_ClassOfWarrantOrRightOutstanding_2">Warrants issued</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ClassOfWarrantOrRightOutstanding" xlink:to="label_ClassOfWarrantOrRightOutstanding_2" xlink:title="Label : ClassOfWarrantOrRightOutstanding to label_ClassOfWarrantOrRightOutstanding_2" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FinancialInstrumentSubjectToMandatoryRedemptionParValuePerShare" xlink:label="FinancialInstrumentSubjectToMandatoryRedemptionParValuePerShare" xlink:title="FinancialInstrumentSubjectToMandatoryRedemptionParValuePerShare" />
    <link:label xlink:type="resource" xlink:label="label_FinancialInstrumentSubjectToMandatoryRedemptionParValuePerShare" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_FinancialInstrumentSubjectToMandatoryRedemptionParValuePerShare" xml:lang="en-US" id="label_FinancialInstrumentSubjectToMandatoryRedemptionParValuePerShare">Warrant redemption price per share of underlying common stock</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FinancialInstrumentSubjectToMandatoryRedemptionParValuePerShare" xlink:to="label_FinancialInstrumentSubjectToMandatoryRedemptionParValuePerShare" xlink:title="Label : FinancialInstrumentSubjectToMandatoryRedemptionParValuePerShare to label_FinancialInstrumentSubjectToMandatoryRedemptionParValuePerShare" />
    <link:label xlink:type="resource" xlink:label="label_FinancialInstrumentSubjectToMandatoryRedemptionParValuePerShare_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_FinancialInstrumentSubjectToMandatoryRedemptionParValuePerShare_1" xml:lang="en-US" id="label_FinancialInstrumentSubjectToMandatoryRedemptionParValuePerShare_1">Financial Instrument Subject to Mandatory Redemption, Par Value Per Share</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FinancialInstrumentSubjectToMandatoryRedemptionParValuePerShare" xlink:to="label_FinancialInstrumentSubjectToMandatoryRedemptionParValuePerShare_1" xlink:title="Label : FinancialInstrumentSubjectToMandatoryRedemptionParValuePerShare to label_FinancialInstrumentSubjectToMandatoryRedemptionParValuePerShare_1" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_DebtInstrumentRedemptionPricePercentageOfExercisePriceOfWarrants" xlink:label="DebtInstrumentRedemptionPricePercentageOfExercisePriceOfWarrants" xlink:title="DebtInstrumentRedemptionPricePercentageOfExercisePriceOfWarrants" />
    <link:label xlink:type="resource" xlink:label="label_DebtInstrumentRedemptionPricePercentageOfExercisePriceOfWarrants" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DebtInstrumentRedemptionPricePercentageOfExercisePriceOfWarrants" xml:lang="en-US" id="label_DebtInstrumentRedemptionPricePercentageOfExercisePriceOfWarrants">Debt instrument, Redemption price, Percentage of exercise price of warrants</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtInstrumentRedemptionPricePercentageOfExercisePriceOfWarrants" xlink:to="label_DebtInstrumentRedemptionPricePercentageOfExercisePriceOfWarrants" xlink:title="Label : DebtInstrumentRedemptionPricePercentageOfExercisePriceOfWarrants to label_DebtInstrumentRedemptionPricePercentageOfExercisePriceOfWarrants" />
    <link:label xlink:type="resource" xlink:label="label_DebtInstrumentRedemptionPricePercentageOfExercisePriceOfWarrants_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_DebtInstrumentRedemptionPricePercentageOfExercisePriceOfWarrants_1" xml:lang="en-US" id="label_DebtInstrumentRedemptionPricePercentageOfExercisePriceOfWarrants_1">Debt instrument, Redemption price, Percentage of exercise price of warrants</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtInstrumentRedemptionPricePercentageOfExercisePriceOfWarrants" xlink:to="label_DebtInstrumentRedemptionPricePercentageOfExercisePriceOfWarrants_1" xlink:title="Label : DebtInstrumentRedemptionPricePercentageOfExercisePriceOfWarrants to label_DebtInstrumentRedemptionPricePercentageOfExercisePriceOfWarrants_1" />
    <link:label xlink:type="resource" xlink:label="label_DebtInstrumentRedemptionPricePercentageOfExercisePriceOfWarrants_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_DebtInstrumentRedemptionPricePercentageOfExercisePriceOfWarrants_2" xml:lang="en-US" id="label_DebtInstrumentRedemptionPricePercentageOfExercisePriceOfWarrants_2">The percentage price of exercise amount of warrants at which debt can be redeemed by the issuer.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtInstrumentRedemptionPricePercentageOfExercisePriceOfWarrants" xlink:to="label_DebtInstrumentRedemptionPricePercentageOfExercisePriceOfWarrants_2" xlink:title="Label : DebtInstrumentRedemptionPricePercentageOfExercisePriceOfWarrants to label_DebtInstrumentRedemptionPricePercentageOfExercisePriceOfWarrants_2" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentRedemptionPricePercentage" xlink:label="DebtInstrumentRedemptionPricePercentage" xlink:title="DebtInstrumentRedemptionPricePercentage" />
    <link:label xlink:type="resource" xlink:label="label_DebtInstrumentRedemptionPricePercentage" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_DebtInstrumentRedemptionPricePercentage" xml:lang="en-US" id="label_DebtInstrumentRedemptionPricePercentage">Debt Instrument, Redemption Price, Percentage</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtInstrumentRedemptionPricePercentage" xlink:to="label_DebtInstrumentRedemptionPricePercentage" xlink:title="Label : DebtInstrumentRedemptionPricePercentage to label_DebtInstrumentRedemptionPricePercentage" />
    <link:label xlink:type="resource" xlink:label="label_DebtInstrumentRedemptionPricePercentage_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DebtInstrumentRedemptionPricePercentage_1" xml:lang="en-US" id="label_DebtInstrumentRedemptionPricePercentage_1">Debt Instrument, Redemption Price, Percentage</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtInstrumentRedemptionPricePercentage" xlink:to="label_DebtInstrumentRedemptionPricePercentage_1" xlink:title="Label : DebtInstrumentRedemptionPricePercentage to label_DebtInstrumentRedemptionPricePercentage_1" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_DebtInstrumentRedemptionPricePercentageOfConversionPrice" xlink:label="DebtInstrumentRedemptionPricePercentageOfConversionPrice" xlink:title="DebtInstrumentRedemptionPricePercentageOfConversionPrice" />
    <link:label xlink:type="resource" xlink:label="label_DebtInstrumentRedemptionPricePercentageOfConversionPrice" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DebtInstrumentRedemptionPricePercentageOfConversionPrice" xml:lang="en-US" id="label_DebtInstrumentRedemptionPricePercentageOfConversionPrice">Debt instrument, Redemption price, Percentage of conversion price</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtInstrumentRedemptionPricePercentageOfConversionPrice" xlink:to="label_DebtInstrumentRedemptionPricePercentageOfConversionPrice" xlink:title="Label : DebtInstrumentRedemptionPricePercentageOfConversionPrice to label_DebtInstrumentRedemptionPricePercentageOfConversionPrice" />
    <link:label xlink:type="resource" xlink:label="label_DebtInstrumentRedemptionPricePercentageOfConversionPrice_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_DebtInstrumentRedemptionPricePercentageOfConversionPrice_1" xml:lang="en-US" id="label_DebtInstrumentRedemptionPricePercentageOfConversionPrice_1">Debt instrument, Redemption price, Percentage of conversion price</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtInstrumentRedemptionPricePercentageOfConversionPrice" xlink:to="label_DebtInstrumentRedemptionPricePercentageOfConversionPrice_1" xlink:title="Label : DebtInstrumentRedemptionPricePercentageOfConversionPrice to label_DebtInstrumentRedemptionPricePercentageOfConversionPrice_1" />
    <link:label xlink:type="resource" xlink:label="label_DebtInstrumentRedemptionPricePercentageOfConversionPrice_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_DebtInstrumentRedemptionPricePercentageOfConversionPrice_2" xml:lang="en-US" id="label_DebtInstrumentRedemptionPricePercentageOfConversionPrice_2">The percentage of coversion price amount at which debt can be redeemed by the issuer.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtInstrumentRedemptionPricePercentageOfConversionPrice" xlink:to="label_DebtInstrumentRedemptionPricePercentageOfConversionPrice_2" xlink:title="Label : DebtInstrumentRedemptionPricePercentageOfConversionPrice to label_DebtInstrumentRedemptionPricePercentageOfConversionPrice_2" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentConvertibleThresholdTradingDays" xlink:label="DebtInstrumentConvertibleThresholdTradingDays" xlink:title="DebtInstrumentConvertibleThresholdTradingDays" />
    <link:label xlink:type="resource" xlink:label="label_DebtInstrumentConvertibleThresholdTradingDays" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DebtInstrumentConvertibleThresholdTradingDays" xml:lang="en-US" id="label_DebtInstrumentConvertibleThresholdTradingDays">Debt Instrument, Convertible, Threshold Trading Days</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtInstrumentConvertibleThresholdTradingDays" xlink:to="label_DebtInstrumentConvertibleThresholdTradingDays" xlink:title="Label : DebtInstrumentConvertibleThresholdTradingDays to label_DebtInstrumentConvertibleThresholdTradingDays" />
    <link:label xlink:type="resource" xlink:label="label_DebtInstrumentConvertibleThresholdTradingDays_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_DebtInstrumentConvertibleThresholdTradingDays_1" xml:lang="en-US" id="label_DebtInstrumentConvertibleThresholdTradingDays_1">Debt Instrument, Convertible, Threshold Trading Days</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtInstrumentConvertibleThresholdTradingDays" xlink:to="label_DebtInstrumentConvertibleThresholdTradingDays_1" xlink:title="Label : DebtInstrumentConvertibleThresholdTradingDays to label_DebtInstrumentConvertibleThresholdTradingDays_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentConvertibleThresholdConsecutiveTradingDays1" xlink:label="DebtInstrumentConvertibleThresholdConsecutiveTradingDays1" xlink:title="DebtInstrumentConvertibleThresholdConsecutiveTradingDays1" />
    <link:label xlink:type="resource" xlink:label="label_DebtInstrumentConvertibleThresholdConsecutiveTradingDays1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_DebtInstrumentConvertibleThresholdConsecutiveTradingDays1" xml:lang="en-US" id="label_DebtInstrumentConvertibleThresholdConsecutiveTradingDays1">Debt Instrument, Convertible, Threshold Consecutive Trading Days</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtInstrumentConvertibleThresholdConsecutiveTradingDays1" xlink:to="label_DebtInstrumentConvertibleThresholdConsecutiveTradingDays1" xlink:title="Label : DebtInstrumentConvertibleThresholdConsecutiveTradingDays1 to label_DebtInstrumentConvertibleThresholdConsecutiveTradingDays1" />
    <link:label xlink:type="resource" xlink:label="label_DebtInstrumentConvertibleThresholdConsecutiveTradingDays1_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DebtInstrumentConvertibleThresholdConsecutiveTradingDays1_1" xml:lang="en-US" id="label_DebtInstrumentConvertibleThresholdConsecutiveTradingDays1_1">Debt Instrument, Convertible, Threshold Consecutive Trading Days</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtInstrumentConvertibleThresholdConsecutiveTradingDays1" xlink:to="label_DebtInstrumentConvertibleThresholdConsecutiveTradingDays1_1" xlink:title="Label : DebtInstrumentConvertibleThresholdConsecutiveTradingDays1 to label_DebtInstrumentConvertibleThresholdConsecutiveTradingDays1_1" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_ExercisePeriodOfDebtIssuedFromDateOfInitialClosing" xlink:label="ExercisePeriodOfDebtIssuedFromDateOfInitialClosing" xlink:title="ExercisePeriodOfDebtIssuedFromDateOfInitialClosing" />
    <link:label xlink:type="resource" xlink:label="label_ExercisePeriodOfDebtIssuedFromDateOfInitialClosing" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_ExercisePeriodOfDebtIssuedFromDateOfInitialClosing" xml:lang="en-US" id="label_ExercisePeriodOfDebtIssuedFromDateOfInitialClosing">The period of exercise of debt from the date of initial closing of debt issued.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ExercisePeriodOfDebtIssuedFromDateOfInitialClosing" xlink:to="label_ExercisePeriodOfDebtIssuedFromDateOfInitialClosing" xlink:title="Label : ExercisePeriodOfDebtIssuedFromDateOfInitialClosing to label_ExercisePeriodOfDebtIssuedFromDateOfInitialClosing" />
    <link:label xlink:type="resource" xlink:label="label_ExercisePeriodOfDebtIssuedFromDateOfInitialClosing_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ExercisePeriodOfDebtIssuedFromDateOfInitialClosing_1" xml:lang="en-US" id="label_ExercisePeriodOfDebtIssuedFromDateOfInitialClosing_1">Exercise period of debt issued, from date of initial closing</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ExercisePeriodOfDebtIssuedFromDateOfInitialClosing" xlink:to="label_ExercisePeriodOfDebtIssuedFromDateOfInitialClosing_1" xlink:title="Label : ExercisePeriodOfDebtIssuedFromDateOfInitialClosing to label_ExercisePeriodOfDebtIssuedFromDateOfInitialClosing_1" />
    <link:label xlink:type="resource" xlink:label="label_ExercisePeriodOfDebtIssuedFromDateOfInitialClosing_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ExercisePeriodOfDebtIssuedFromDateOfInitialClosing_2" xml:lang="en-US" id="label_ExercisePeriodOfDebtIssuedFromDateOfInitialClosing_2">Exercise period of debt issued, from date of Initial Closing</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ExercisePeriodOfDebtIssuedFromDateOfInitialClosing" xlink:to="label_ExercisePeriodOfDebtIssuedFromDateOfInitialClosing_2" xlink:title="Label : ExercisePeriodOfDebtIssuedFromDateOfInitialClosing to label_ExercisePeriodOfDebtIssuedFromDateOfInitialClosing_2" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_FortressInvestmentGroupLlcMember" xlink:label="FortressInvestmentGroupLlcMember" xlink:title="FortressInvestmentGroupLlcMember" />
    <link:label xlink:type="resource" xlink:label="label_FortressInvestmentGroupLlcMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_FortressInvestmentGroupLlcMember" xml:lang="en-US" id="label_FortressInvestmentGroupLlcMember">This member stands for the information pertaining to "Fortress Investment Group LLC".</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FortressInvestmentGroupLlcMember" xlink:to="label_FortressInvestmentGroupLlcMember" xlink:title="Label : FortressInvestmentGroupLlcMember to label_FortressInvestmentGroupLlcMember" />
    <link:label xlink:type="resource" xlink:label="label_FortressInvestmentGroupLlcMember_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_FortressInvestmentGroupLlcMember_1" xml:lang="en-US" id="label_FortressInvestmentGroupLlcMember_1">Fortress Investment Group LLC [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FortressInvestmentGroupLlcMember" xlink:to="label_FortressInvestmentGroupLlcMember_1" xlink:title="Label : FortressInvestmentGroupLlcMember to label_FortressInvestmentGroupLlcMember_1" />
    <link:label xlink:type="resource" xlink:label="label_FortressInvestmentGroupLlcMember_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_FortressInvestmentGroupLlcMember_2" xml:lang="en-US" id="label_FortressInvestmentGroupLlcMember_2">Fortress Investment Group LLC [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FortressInvestmentGroupLlcMember" xlink:to="label_FortressInvestmentGroupLlcMember_2" xlink:title="Label : FortressInvestmentGroupLlcMember to label_FortressInvestmentGroupLlcMember_2" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_EntityAffiliatedWithNeilSSubinMember" xlink:label="EntityAffiliatedWithNeilSSubinMember" xlink:title="EntityAffiliatedWithNeilSSubinMember" />
    <link:label xlink:type="resource" xlink:label="label_EntityAffiliatedWithNeilSSubinMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_EntityAffiliatedWithNeilSSubinMember" xml:lang="en-US" id="label_EntityAffiliatedWithNeilSSubinMember">Entity affiliated with Neil S. Subin [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EntityAffiliatedWithNeilSSubinMember" xlink:to="label_EntityAffiliatedWithNeilSSubinMember" xlink:title="Label : EntityAffiliatedWithNeilSSubinMember to label_EntityAffiliatedWithNeilSSubinMember" />
    <link:label xlink:type="resource" xlink:label="label_EntityAffiliatedWithNeilSSubinMember_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_EntityAffiliatedWithNeilSSubinMember_1" xml:lang="en-US" id="label_EntityAffiliatedWithNeilSSubinMember_1">Entity affiliated with Neil S. Subin [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EntityAffiliatedWithNeilSSubinMember" xlink:to="label_EntityAffiliatedWithNeilSSubinMember_1" xlink:title="Label : EntityAffiliatedWithNeilSSubinMember to label_EntityAffiliatedWithNeilSSubinMember_1" />
    <link:label xlink:type="resource" xlink:label="label_EntityAffiliatedWithNeilSSubinMember_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_EntityAffiliatedWithNeilSSubinMember_2" xml:lang="en-US" id="label_EntityAffiliatedWithNeilSSubinMember_2">This member stands for the information pertaining to "Entity affiliated with Neil S. Subin".</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EntityAffiliatedWithNeilSSubinMember" xlink:to="label_EntityAffiliatedWithNeilSSubinMember_2" xlink:title="Label : EntityAffiliatedWithNeilSSubinMember to label_EntityAffiliatedWithNeilSSubinMember_2" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_DebtInstrumentConvertibleNumberOfSharesPerThousandDollarsPrincipalAmount" xlink:label="DebtInstrumentConvertibleNumberOfSharesPerThousandDollarsPrincipalAmount" xlink:title="DebtInstrumentConvertibleNumberOfSharesPerThousandDollarsPrincipalAmount" />
    <link:label xlink:type="resource" xlink:label="label_DebtInstrumentConvertibleNumberOfSharesPerThousandDollarsPrincipalAmount" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_DebtInstrumentConvertibleNumberOfSharesPerThousandDollarsPrincipalAmount" xml:lang="en-US" id="label_DebtInstrumentConvertibleNumberOfSharesPerThousandDollarsPrincipalAmount">The number of equity instruments per thousand dollars principal amount that the holder of the debt instrument would receive if the debt was converted to equity.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtInstrumentConvertibleNumberOfSharesPerThousandDollarsPrincipalAmount" xlink:to="label_DebtInstrumentConvertibleNumberOfSharesPerThousandDollarsPrincipalAmount" xlink:title="Label : DebtInstrumentConvertibleNumberOfSharesPerThousandDollarsPrincipalAmount to label_DebtInstrumentConvertibleNumberOfSharesPerThousandDollarsPrincipalAmount" />
    <link:label xlink:type="resource" xlink:label="label_DebtInstrumentConvertibleNumberOfSharesPerThousandDollarsPrincipalAmount_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DebtInstrumentConvertibleNumberOfSharesPerThousandDollarsPrincipalAmount_1" xml:lang="en-US" id="label_DebtInstrumentConvertibleNumberOfSharesPerThousandDollarsPrincipalAmount_1">Debt Instrument, Convertible, Number of shares per thousand dollars principal amount</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtInstrumentConvertibleNumberOfSharesPerThousandDollarsPrincipalAmount" xlink:to="label_DebtInstrumentConvertibleNumberOfSharesPerThousandDollarsPrincipalAmount_1" xlink:title="Label : DebtInstrumentConvertibleNumberOfSharesPerThousandDollarsPrincipalAmount to label_DebtInstrumentConvertibleNumberOfSharesPerThousandDollarsPrincipalAmount_1" />
    <link:label xlink:type="resource" xlink:label="label_DebtInstrumentConvertibleNumberOfSharesPerThousandDollarsPrincipalAmount_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_DebtInstrumentConvertibleNumberOfSharesPerThousandDollarsPrincipalAmount_2" xml:lang="en-US" id="label_DebtInstrumentConvertibleNumberOfSharesPerThousandDollarsPrincipalAmount_2">Debt Instrument, Convertible, Number of shares per thousand dollars principal amount</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtInstrumentConvertibleNumberOfSharesPerThousandDollarsPrincipalAmount" xlink:to="label_DebtInstrumentConvertibleNumberOfSharesPerThousandDollarsPrincipalAmount_2" xlink:title="Label : DebtInstrumentConvertibleNumberOfSharesPerThousandDollarsPrincipalAmount to label_DebtInstrumentConvertibleNumberOfSharesPerThousandDollarsPrincipalAmount_2" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_DebtInstrumentConvertibleDenominatorValueOfPrincipalAmount" xlink:label="DebtInstrumentConvertibleDenominatorValueOfPrincipalAmount" xlink:title="DebtInstrumentConvertibleDenominatorValueOfPrincipalAmount" />
    <link:label xlink:type="resource" xlink:label="label_DebtInstrumentConvertibleDenominatorValueOfPrincipalAmount" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_DebtInstrumentConvertibleDenominatorValueOfPrincipalAmount" xml:lang="en-US" id="label_DebtInstrumentConvertibleDenominatorValueOfPrincipalAmount">The denominator value of principal amount to determine the conversion price through shares.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtInstrumentConvertibleDenominatorValueOfPrincipalAmount" xlink:to="label_DebtInstrumentConvertibleDenominatorValueOfPrincipalAmount" xlink:title="Label : DebtInstrumentConvertibleDenominatorValueOfPrincipalAmount to label_DebtInstrumentConvertibleDenominatorValueOfPrincipalAmount" />
    <link:label xlink:type="resource" xlink:label="label_DebtInstrumentConvertibleDenominatorValueOfPrincipalAmount_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_DebtInstrumentConvertibleDenominatorValueOfPrincipalAmount_1" xml:lang="en-US" id="label_DebtInstrumentConvertibleDenominatorValueOfPrincipalAmount_1">Debt Instrument, Convertible, Denominator value of principal amount</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtInstrumentConvertibleDenominatorValueOfPrincipalAmount" xlink:to="label_DebtInstrumentConvertibleDenominatorValueOfPrincipalAmount_1" xlink:title="Label : DebtInstrumentConvertibleDenominatorValueOfPrincipalAmount to label_DebtInstrumentConvertibleDenominatorValueOfPrincipalAmount_1" />
    <link:label xlink:type="resource" xlink:label="label_DebtInstrumentConvertibleDenominatorValueOfPrincipalAmount_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DebtInstrumentConvertibleDenominatorValueOfPrincipalAmount_2" xml:lang="en-US" id="label_DebtInstrumentConvertibleDenominatorValueOfPrincipalAmount_2">Debt Instrument, Convertible, Denominator value of principal amount</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtInstrumentConvertibleDenominatorValueOfPrincipalAmount" xlink:to="label_DebtInstrumentConvertibleDenominatorValueOfPrincipalAmount_2" xlink:title="Label : DebtInstrumentConvertibleDenominatorValueOfPrincipalAmount to label_DebtInstrumentConvertibleDenominatorValueOfPrincipalAmount_2" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_MinimumPercentageOfOwnershipInterestHeldByStockholder" xlink:label="MinimumPercentageOfOwnershipInterestHeldByStockholder" xlink:title="MinimumPercentageOfOwnershipInterestHeldByStockholder" />
    <link:label xlink:type="resource" xlink:label="label_MinimumPercentageOfOwnershipInterestHeldByStockholder" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_MinimumPercentageOfOwnershipInterestHeldByStockholder" xml:lang="en-US" id="label_MinimumPercentageOfOwnershipInterestHeldByStockholder">The minimum percentage of ownership interest held by the stockholder of the reporting entity.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MinimumPercentageOfOwnershipInterestHeldByStockholder" xlink:to="label_MinimumPercentageOfOwnershipInterestHeldByStockholder" xlink:title="Label : MinimumPercentageOfOwnershipInterestHeldByStockholder to label_MinimumPercentageOfOwnershipInterestHeldByStockholder" />
    <link:label xlink:type="resource" xlink:label="label_MinimumPercentageOfOwnershipInterestHeldByStockholder_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_MinimumPercentageOfOwnershipInterestHeldByStockholder_1" xml:lang="en-US" id="label_MinimumPercentageOfOwnershipInterestHeldByStockholder_1">Minimum percentage of ownership interest held by stockholder (as a percent)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MinimumPercentageOfOwnershipInterestHeldByStockholder" xlink:to="label_MinimumPercentageOfOwnershipInterestHeldByStockholder_1" xlink:title="Label : MinimumPercentageOfOwnershipInterestHeldByStockholder to label_MinimumPercentageOfOwnershipInterestHeldByStockholder_1" />
    <link:label xlink:type="resource" xlink:label="label_MinimumPercentageOfOwnershipInterestHeldByStockholder_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_MinimumPercentageOfOwnershipInterestHeldByStockholder_2" xml:lang="en-US" id="label_MinimumPercentageOfOwnershipInterestHeldByStockholder_2">Minimum percentage of ownership interest held by stockholder</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MinimumPercentageOfOwnershipInterestHeldByStockholder" xlink:to="label_MinimumPercentageOfOwnershipInterestHeldByStockholder_2" xlink:title="Label : MinimumPercentageOfOwnershipInterestHeldByStockholder to label_MinimumPercentageOfOwnershipInterestHeldByStockholder_2" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentIncreaseAccruedInterest" xlink:label="DebtInstrumentIncreaseAccruedInterest" xlink:title="DebtInstrumentIncreaseAccruedInterest" />
    <link:label xlink:type="resource" xlink:label="label_DebtInstrumentIncreaseAccruedInterest" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DebtInstrumentIncreaseAccruedInterest" xml:lang="en-US" id="label_DebtInstrumentIncreaseAccruedInterest">Debt Instrument, Increase, Accrued Interest</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtInstrumentIncreaseAccruedInterest" xlink:to="label_DebtInstrumentIncreaseAccruedInterest" xlink:title="Label : DebtInstrumentIncreaseAccruedInterest to label_DebtInstrumentIncreaseAccruedInterest" />
    <link:label xlink:type="resource" xlink:label="label_DebtInstrumentIncreaseAccruedInterest_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_DebtInstrumentIncreaseAccruedInterest_1" xml:lang="en-US" id="label_DebtInstrumentIncreaseAccruedInterest_1">Debt Instrument, Accrued interest expense</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtInstrumentIncreaseAccruedInterest" xlink:to="label_DebtInstrumentIncreaseAccruedInterest_1" xlink:title="Label : DebtInstrumentIncreaseAccruedInterest to label_DebtInstrumentIncreaseAccruedInterest_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_WarrantsNotSettleableInCashFairValueDisclosure" xlink:label="WarrantsNotSettleableInCashFairValueDisclosure" xlink:title="WarrantsNotSettleableInCashFairValueDisclosure" />
    <link:label xlink:type="resource" xlink:label="label_WarrantsNotSettleableInCashFairValueDisclosure" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_WarrantsNotSettleableInCashFairValueDisclosure" xml:lang="en-US" id="label_WarrantsNotSettleableInCashFairValueDisclosure">Warrants Not Settleable in Cash, Fair Value Disclosure</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WarrantsNotSettleableInCashFairValueDisclosure" xlink:to="label_WarrantsNotSettleableInCashFairValueDisclosure" xlink:title="Label : WarrantsNotSettleableInCashFairValueDisclosure to label_WarrantsNotSettleableInCashFairValueDisclosure" />
    <link:label xlink:type="resource" xlink:label="label_WarrantsNotSettleableInCashFairValueDisclosure_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_WarrantsNotSettleableInCashFairValueDisclosure_1" xml:lang="en-US" id="label_WarrantsNotSettleableInCashFairValueDisclosure_1">Agregate fair value of the Warrants</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WarrantsNotSettleableInCashFairValueDisclosure" xlink:to="label_WarrantsNotSettleableInCashFairValueDisclosure_1" xlink:title="Label : WarrantsNotSettleableInCashFairValueDisclosure to label_WarrantsNotSettleableInCashFairValueDisclosure_1" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_PercentageOfCommonStockOwnershipLimitation" xlink:label="PercentageOfCommonStockOwnershipLimitation" xlink:title="PercentageOfCommonStockOwnershipLimitation" />
    <link:label xlink:type="resource" xlink:label="label_PercentageOfCommonStockOwnershipLimitation" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_PercentageOfCommonStockOwnershipLimitation" xml:lang="en-US" id="label_PercentageOfCommonStockOwnershipLimitation">Percentage of Common Stock Ownership Limitation</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PercentageOfCommonStockOwnershipLimitation" xlink:to="label_PercentageOfCommonStockOwnershipLimitation" xlink:title="Label : PercentageOfCommonStockOwnershipLimitation to label_PercentageOfCommonStockOwnershipLimitation" />
    <link:label xlink:type="resource" xlink:label="label_PercentageOfCommonStockOwnershipLimitation_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_PercentageOfCommonStockOwnershipLimitation_1" xml:lang="en-US" id="label_PercentageOfCommonStockOwnershipLimitation_1">Exercise of warrants, subject to beneficial ownership limitation</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PercentageOfCommonStockOwnershipLimitation" xlink:to="label_PercentageOfCommonStockOwnershipLimitation_1" xlink:title="Label : PercentageOfCommonStockOwnershipLimitation to label_PercentageOfCommonStockOwnershipLimitation_1" />
    <link:label xlink:type="resource" xlink:label="label_PercentageOfCommonStockOwnershipLimitation_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_PercentageOfCommonStockOwnershipLimitation_2" xml:lang="en-US" id="label_PercentageOfCommonStockOwnershipLimitation_2">The percentage of beneficial ownership limitation of the common stock.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PercentageOfCommonStockOwnershipLimitation" xlink:to="label_PercentageOfCommonStockOwnershipLimitation_2" xlink:title="Label : PercentageOfCommonStockOwnershipLimitation to label_PercentageOfCommonStockOwnershipLimitation_2" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_ExerciseOfWarrantsLimitationPercentageOfCommonStockOwnershipTerminationPeriodNotice" xlink:label="ExerciseOfWarrantsLimitationPercentageOfCommonStockOwnershipTerminationPeriodNotice" xlink:title="ExerciseOfWarrantsLimitationPercentageOfCommonStockOwnershipTerminationPeriodNotice" />
    <link:label xlink:type="resource" xlink:label="label_ExerciseOfWarrantsLimitationPercentageOfCommonStockOwnershipTerminationPeriodNotice" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ExerciseOfWarrantsLimitationPercentageOfCommonStockOwnershipTerminationPeriodNotice" xml:lang="en-US" id="label_ExerciseOfWarrantsLimitationPercentageOfCommonStockOwnershipTerminationPeriodNotice">Exercise of warrants, subject to beneficial ownership limitation termination period notice</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ExerciseOfWarrantsLimitationPercentageOfCommonStockOwnershipTerminationPeriodNotice" xlink:to="label_ExerciseOfWarrantsLimitationPercentageOfCommonStockOwnershipTerminationPeriodNotice" xlink:title="Label : ExerciseOfWarrantsLimitationPercentageOfCommonStockOwnershipTerminationPeriodNotice to label_ExerciseOfWarrantsLimitationPercentageOfCommonStockOwnershipTerminationPeriodNotice" />
    <link:label xlink:type="resource" xlink:label="label_ExerciseOfWarrantsLimitationPercentageOfCommonStockOwnershipTerminationPeriodNotice_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ExerciseOfWarrantsLimitationPercentageOfCommonStockOwnershipTerminationPeriodNotice_1" xml:lang="en-US" id="label_ExerciseOfWarrantsLimitationPercentageOfCommonStockOwnershipTerminationPeriodNotice_1">Exercise of warrants, subject to beneficial ownership limitation termination period notice</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ExerciseOfWarrantsLimitationPercentageOfCommonStockOwnershipTerminationPeriodNotice" xlink:to="label_ExerciseOfWarrantsLimitationPercentageOfCommonStockOwnershipTerminationPeriodNotice_1" xlink:title="Label : ExerciseOfWarrantsLimitationPercentageOfCommonStockOwnershipTerminationPeriodNotice to label_ExerciseOfWarrantsLimitationPercentageOfCommonStockOwnershipTerminationPeriodNotice_1" />
    <link:label xlink:type="resource" xlink:label="label_ExerciseOfWarrantsLimitationPercentageOfCommonStockOwnershipTerminationPeriodNotice_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_ExerciseOfWarrantsLimitationPercentageOfCommonStockOwnershipTerminationPeriodNotice_2" xml:lang="en-US" id="label_ExerciseOfWarrantsLimitationPercentageOfCommonStockOwnershipTerminationPeriodNotice_2">The notice period for exercise of warrants, subject to beneficial ownership limitation termination.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ExerciseOfWarrantsLimitationPercentageOfCommonStockOwnershipTerminationPeriodNotice" xlink:to="label_ExerciseOfWarrantsLimitationPercentageOfCommonStockOwnershipTerminationPeriodNotice_2" xlink:title="Label : ExerciseOfWarrantsLimitationPercentageOfCommonStockOwnershipTerminationPeriodNotice to label_ExerciseOfWarrantsLimitationPercentageOfCommonStockOwnershipTerminationPeriodNotice_2" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_PercentageOfCommonStockOutstandingLimitation" xlink:label="PercentageOfCommonStockOutstandingLimitation" xlink:title="PercentageOfCommonStockOutstandingLimitation" />
    <link:label xlink:type="resource" xlink:label="label_PercentageOfCommonStockOutstandingLimitation" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_PercentageOfCommonStockOutstandingLimitation" xml:lang="en-US" id="label_PercentageOfCommonStockOutstandingLimitation">Exercise of warrants, percentage of common stock outstanding issue limitation</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PercentageOfCommonStockOutstandingLimitation" xlink:to="label_PercentageOfCommonStockOutstandingLimitation" xlink:title="Label : PercentageOfCommonStockOutstandingLimitation to label_PercentageOfCommonStockOutstandingLimitation" />
    <link:label xlink:type="resource" xlink:label="label_PercentageOfCommonStockOutstandingLimitation_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_PercentageOfCommonStockOutstandingLimitation_1" xml:lang="en-US" id="label_PercentageOfCommonStockOutstandingLimitation_1">Percentage Of Common Stock Outstanding Limitation</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PercentageOfCommonStockOutstandingLimitation" xlink:to="label_PercentageOfCommonStockOutstandingLimitation_1" xlink:title="Label : PercentageOfCommonStockOutstandingLimitation to label_PercentageOfCommonStockOutstandingLimitation_1" />
    <link:label xlink:type="resource" xlink:label="label_PercentageOfCommonStockOutstandingLimitation_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_PercentageOfCommonStockOutstandingLimitation_2" xml:lang="en-US" id="label_PercentageOfCommonStockOutstandingLimitation_2">The percentage of common stock outstanding issue limitation.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PercentageOfCommonStockOutstandingLimitation" xlink:to="label_PercentageOfCommonStockOutstandingLimitation_2" xlink:title="Label : PercentageOfCommonStockOutstandingLimitation to label_PercentageOfCommonStockOutstandingLimitation_2" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentUnamortizedDiscountNoncurrent" xlink:label="DebtInstrumentUnamortizedDiscountNoncurrent" xlink:title="DebtInstrumentUnamortizedDiscountNoncurrent" />
    <link:label xlink:type="resource" xlink:label="label_DebtInstrumentUnamortizedDiscountNoncurrent" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_DebtInstrumentUnamortizedDiscountNoncurrent" xml:lang="en-US" id="label_DebtInstrumentUnamortizedDiscountNoncurrent">Debt discount of the Notes</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtInstrumentUnamortizedDiscountNoncurrent" xlink:to="label_DebtInstrumentUnamortizedDiscountNoncurrent" xlink:title="Label : DebtInstrumentUnamortizedDiscountNoncurrent to label_DebtInstrumentUnamortizedDiscountNoncurrent" />
    <link:label xlink:type="resource" xlink:label="label_DebtInstrumentUnamortizedDiscountNoncurrent_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DebtInstrumentUnamortizedDiscountNoncurrent_1" xml:lang="en-US" id="label_DebtInstrumentUnamortizedDiscountNoncurrent_1">Debt Instrument, Unamortized Discount, Noncurrent</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtInstrumentUnamortizedDiscountNoncurrent" xlink:to="label_DebtInstrumentUnamortizedDiscountNoncurrent_1" xlink:title="Label : DebtInstrumentUnamortizedDiscountNoncurrent to label_DebtInstrumentUnamortizedDiscountNoncurrent_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongTermDebtFairValue" xlink:label="LongTermDebtFairValue" xlink:title="LongTermDebtFairValue" />
    <link:label xlink:type="resource" xlink:label="label_LongTermDebtFairValue" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_LongTermDebtFairValue" xml:lang="en-US" id="label_LongTermDebtFairValue">Fair value of debt</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LongTermDebtFairValue" xlink:to="label_LongTermDebtFairValue" xlink:title="Label : LongTermDebtFairValue to label_LongTermDebtFairValue" />
    <link:label xlink:type="resource" xlink:label="label_LongTermDebtFairValue_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_LongTermDebtFairValue_1" xml:lang="en-US" id="label_LongTermDebtFairValue_1">Long-Term Debt, Fair Value</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LongTermDebtFairValue" xlink:to="label_LongTermDebtFairValue_1" xlink:title="Label : LongTermDebtFairValue to label_LongTermDebtFairValue_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InterestExpenseNonoperating" xlink:label="InterestExpenseNonoperating" xlink:title="InterestExpenseNonoperating" />
    <link:label xlink:type="resource" xlink:label="label_InterestExpenseNonoperating" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_InterestExpenseNonoperating" xml:lang="en-US" id="label_InterestExpenseNonoperating">Interest Expense, Nonoperating</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InterestExpenseNonoperating" xlink:to="label_InterestExpenseNonoperating" xlink:title="Label : InterestExpenseNonoperating to label_InterestExpenseNonoperating" />
    <link:label xlink:type="resource" xlink:label="label_InterestExpenseNonoperating_1" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="label_InterestExpenseNonoperating_1" xml:lang="en-US" id="label_InterestExpenseNonoperating_1">Interest expense &#x2013; 2028 Notes</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InterestExpenseNonoperating" xlink:to="label_InterestExpenseNonoperating_1" xlink:title="Label : InterestExpenseNonoperating to label_InterestExpenseNonoperating_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InterestExpenseDebtExcludingAmortization" xlink:label="InterestExpenseDebtExcludingAmortization" xlink:title="InterestExpenseDebtExcludingAmortization" />
    <link:label xlink:type="resource" xlink:label="label_InterestExpenseDebtExcludingAmortization" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_InterestExpenseDebtExcludingAmortization" xml:lang="en-US" id="label_InterestExpenseDebtExcludingAmortization">Contractual interest expense</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InterestExpenseDebtExcludingAmortization" xlink:to="label_InterestExpenseDebtExcludingAmortization" xlink:title="Label : InterestExpenseDebtExcludingAmortization to label_InterestExpenseDebtExcludingAmortization" />
    <link:label xlink:type="resource" xlink:label="label_InterestExpenseDebtExcludingAmortization_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_InterestExpenseDebtExcludingAmortization_1" xml:lang="en-US" id="label_InterestExpenseDebtExcludingAmortization_1">Interest Expense, Debt, Excluding Amortization</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InterestExpenseDebtExcludingAmortization" xlink:to="label_InterestExpenseDebtExcludingAmortization_1" xlink:title="Label : InterestExpenseDebtExcludingAmortization to label_InterestExpenseDebtExcludingAmortization_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AmortizationOfDebtDiscountPremium" xlink:label="AmortizationOfDebtDiscountPremium" xlink:title="AmortizationOfDebtDiscountPremium" />
    <link:label xlink:type="resource" xlink:label="label_AmortizationOfDebtDiscountPremium" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_AmortizationOfDebtDiscountPremium" xml:lang="en-US" id="label_AmortizationOfDebtDiscountPremium">Amortization of debt discounts</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AmortizationOfDebtDiscountPremium" xlink:to="label_AmortizationOfDebtDiscountPremium" xlink:title="Label : AmortizationOfDebtDiscountPremium to label_AmortizationOfDebtDiscountPremium" />
    <link:label xlink:type="resource" xlink:label="label_AmortizationOfDebtDiscountPremium_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AmortizationOfDebtDiscountPremium_1" xml:lang="en-US" id="label_AmortizationOfDebtDiscountPremium_1">Amortization of Debt Discount (Premium)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AmortizationOfDebtDiscountPremium" xlink:to="label_AmortizationOfDebtDiscountPremium_1" xlink:title="Label : AmortizationOfDebtDiscountPremium to label_AmortizationOfDebtDiscountPremium_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentInterestRateEffectivePercentage" xlink:label="DebtInstrumentInterestRateEffectivePercentage" xlink:title="DebtInstrumentInterestRateEffectivePercentage" />
    <link:label xlink:type="resource" xlink:label="label_DebtInstrumentInterestRateEffectivePercentage" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DebtInstrumentInterestRateEffectivePercentage" xml:lang="en-US" id="label_DebtInstrumentInterestRateEffectivePercentage">Debt Instrument, Interest Rate, Effective Percentage</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtInstrumentInterestRateEffectivePercentage" xlink:to="label_DebtInstrumentInterestRateEffectivePercentage" xlink:title="Label : DebtInstrumentInterestRateEffectivePercentage to label_DebtInstrumentInterestRateEffectivePercentage" />
    <link:label xlink:type="resource" xlink:label="label_DebtInstrumentInterestRateEffectivePercentage_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_DebtInstrumentInterestRateEffectivePercentage_1" xml:lang="en-US" id="label_DebtInstrumentInterestRateEffectivePercentage_1">Debt Instrument, Interest Rate, Effective Percentage</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtInstrumentInterestRateEffectivePercentage" xlink:to="label_DebtInstrumentInterestRateEffectivePercentage_1" xlink:title="Label : DebtInstrumentInterestRateEffectivePercentage to label_DebtInstrumentInterestRateEffectivePercentage_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentInterestRateIncreaseDecrease" xlink:label="DebtInstrumentInterestRateIncreaseDecrease" xlink:title="DebtInstrumentInterestRateIncreaseDecrease" />
    <link:label xlink:type="resource" xlink:label="label_DebtInstrumentInterestRateIncreaseDecrease" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DebtInstrumentInterestRateIncreaseDecrease" xml:lang="en-US" id="label_DebtInstrumentInterestRateIncreaseDecrease">Debt Instrument, Interest Rate, Increase (Decrease)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtInstrumentInterestRateIncreaseDecrease" xlink:to="label_DebtInstrumentInterestRateIncreaseDecrease" xlink:title="Label : DebtInstrumentInterestRateIncreaseDecrease to label_DebtInstrumentInterestRateIncreaseDecrease" />
    <link:label xlink:type="resource" xlink:label="label_DebtInstrumentInterestRateIncreaseDecrease_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_DebtInstrumentInterestRateIncreaseDecrease_1" xml:lang="en-US" id="label_DebtInstrumentInterestRateIncreaseDecrease_1">Debt Instrument, Interest Rate, Increase (Decrease) (as a percent)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtInstrumentInterestRateIncreaseDecrease" xlink:to="label_DebtInstrumentInterestRateIncreaseDecrease_1" xlink:title="Label : DebtInstrumentInterestRateIncreaseDecrease to label_DebtInstrumentInterestRateIncreaseDecrease_1" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_DebtInstrumentInterestRateIncreaseAtEventOfDefault" xlink:label="DebtInstrumentInterestRateIncreaseAtEventOfDefault" xlink:title="DebtInstrumentInterestRateIncreaseAtEventOfDefault" />
    <link:label xlink:type="resource" xlink:label="label_DebtInstrumentInterestRateIncreaseAtEventOfDefault" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_DebtInstrumentInterestRateIncreaseAtEventOfDefault" xml:lang="en-US" id="label_DebtInstrumentInterestRateIncreaseAtEventOfDefault">Debt Instrument, Interest Rate, Increase at Event of Default</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtInstrumentInterestRateIncreaseAtEventOfDefault" xlink:to="label_DebtInstrumentInterestRateIncreaseAtEventOfDefault" xlink:title="Label : DebtInstrumentInterestRateIncreaseAtEventOfDefault to label_DebtInstrumentInterestRateIncreaseAtEventOfDefault" />
    <link:label xlink:type="resource" xlink:label="label_DebtInstrumentInterestRateIncreaseAtEventOfDefault_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DebtInstrumentInterestRateIncreaseAtEventOfDefault_1" xml:lang="en-US" id="label_DebtInstrumentInterestRateIncreaseAtEventOfDefault_1">Debt Instrument, Interest Rate, Increase at Event of Default</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtInstrumentInterestRateIncreaseAtEventOfDefault" xlink:to="label_DebtInstrumentInterestRateIncreaseAtEventOfDefault_1" xlink:title="Label : DebtInstrumentInterestRateIncreaseAtEventOfDefault to label_DebtInstrumentInterestRateIncreaseAtEventOfDefault_1" />
    <link:label xlink:type="resource" xlink:label="label_DebtInstrumentInterestRateIncreaseAtEventOfDefault_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_DebtInstrumentInterestRateIncreaseAtEventOfDefault_2" xml:lang="en-US" id="label_DebtInstrumentInterestRateIncreaseAtEventOfDefault_2">The incremental percentage increase (decrease) in the stated rate on a debt instrument at the event of default.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtInstrumentInterestRateIncreaseAtEventOfDefault" xlink:to="label_DebtInstrumentInterestRateIncreaseAtEventOfDefault_2" xlink:title="Label : DebtInstrumentInterestRateIncreaseAtEventOfDefault to label_DebtInstrumentInterestRateIncreaseAtEventOfDefault_2" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentRedemptionPeriodStartDate" xlink:label="DebtInstrumentRedemptionPeriodStartDate" xlink:title="DebtInstrumentRedemptionPeriodStartDate" />
    <link:label xlink:type="resource" xlink:label="label_DebtInstrumentRedemptionPeriodStartDate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DebtInstrumentRedemptionPeriodStartDate" xml:lang="en-US" id="label_DebtInstrumentRedemptionPeriodStartDate">Debt Instrument, Redemption Period, Start Date</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtInstrumentRedemptionPeriodStartDate" xlink:to="label_DebtInstrumentRedemptionPeriodStartDate" xlink:title="Label : DebtInstrumentRedemptionPeriodStartDate to label_DebtInstrumentRedemptionPeriodStartDate" />
    <link:label xlink:type="resource" xlink:label="label_DebtInstrumentRedemptionPeriodStartDate_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_DebtInstrumentRedemptionPeriodStartDate_1" xml:lang="en-US" id="label_DebtInstrumentRedemptionPeriodStartDate_1">Debt Instrument, Redemption Period, Start Date</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtInstrumentRedemptionPeriodStartDate" xlink:to="label_DebtInstrumentRedemptionPeriodStartDate_1" xlink:title="Label : DebtInstrumentRedemptionPeriodStartDate to label_DebtInstrumentRedemptionPeriodStartDate_1" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_DebtInstrumentRedemptionPricePercentageOfPrincipalAmountAtEventOfCertainNonOrdinaryCourseAssetSales" xlink:label="DebtInstrumentRedemptionPricePercentageOfPrincipalAmountAtEventOfCertainNonOrdinaryCourseAssetSales" xlink:title="DebtInstrumentRedemptionPricePercentageOfPrincipalAmountAtEventOfCertainNonOrdinaryCourseAssetSales" />
    <link:label xlink:type="resource" xlink:label="label_DebtInstrumentRedemptionPricePercentageOfPrincipalAmountAtEventOfCertainNonOrdinaryCourseAssetSales" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DebtInstrumentRedemptionPricePercentageOfPrincipalAmountAtEventOfCertainNonOrdinaryCourseAssetSales" xml:lang="en-US" id="label_DebtInstrumentRedemptionPricePercentageOfPrincipalAmountAtEventOfCertainNonOrdinaryCourseAssetSales">Debt Instrument, Redemption Price, Percentage of Principal Amount at Event of Certain Non-Ordinary Course Asset Sales</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtInstrumentRedemptionPricePercentageOfPrincipalAmountAtEventOfCertainNonOrdinaryCourseAssetSales" xlink:to="label_DebtInstrumentRedemptionPricePercentageOfPrincipalAmountAtEventOfCertainNonOrdinaryCourseAssetSales" xlink:title="Label : DebtInstrumentRedemptionPricePercentageOfPrincipalAmountAtEventOfCertainNonOrdinaryCourseAssetSales to label_DebtInstrumentRedemptionPricePercentageOfPrincipalAmountAtEventOfCertainNonOrdinaryCourseAssetSales" />
    <link:label xlink:type="resource" xlink:label="label_DebtInstrumentRedemptionPricePercentageOfPrincipalAmountAtEventOfCertainNonOrdinaryCourseAssetSales_1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_DebtInstrumentRedemptionPricePercentageOfPrincipalAmountAtEventOfCertainNonOrdinaryCourseAssetSales_1" xml:lang="en-US" id="label_DebtInstrumentRedemptionPricePercentageOfPrincipalAmountAtEventOfCertainNonOrdinaryCourseAssetSales_1">The percentage price of original principal amount of debt at which debt can be redeemed by the issuer at the event of certain non-ordinary course asset sales, including sales of certain intellectual property or spectrum licensed by the FCC to the reporting entity or its subsidiaries.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtInstrumentRedemptionPricePercentageOfPrincipalAmountAtEventOfCertainNonOrdinaryCourseAssetSales" xlink:to="label_DebtInstrumentRedemptionPricePercentageOfPrincipalAmountAtEventOfCertainNonOrdinaryCourseAssetSales_1" xlink:title="Label : DebtInstrumentRedemptionPricePercentageOfPrincipalAmountAtEventOfCertainNonOrdinaryCourseAssetSales to label_DebtInstrumentRedemptionPricePercentageOfPrincipalAmountAtEventOfCertainNonOrdinaryCourseAssetSales_1" />
    <link:label xlink:type="resource" xlink:label="label_DebtInstrumentRedemptionPricePercentageOfPrincipalAmountAtEventOfCertainNonOrdinaryCourseAssetSales_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_DebtInstrumentRedemptionPricePercentageOfPrincipalAmountAtEventOfCertainNonOrdinaryCourseAssetSales_2" xml:lang="en-US" id="label_DebtInstrumentRedemptionPricePercentageOfPrincipalAmountAtEventOfCertainNonOrdinaryCourseAssetSales_2">Debt Instrument, Redemption Price, Percentage of Principal Amount at Event of Certain Non-Ordinary Course Asset Sales</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtInstrumentRedemptionPricePercentageOfPrincipalAmountAtEventOfCertainNonOrdinaryCourseAssetSales" xlink:to="label_DebtInstrumentRedemptionPricePercentageOfPrincipalAmountAtEventOfCertainNonOrdinaryCourseAssetSales_2" xlink:title="Label : DebtInstrumentRedemptionPricePercentageOfPrincipalAmountAtEventOfCertainNonOrdinaryCourseAssetSales to label_DebtInstrumentRedemptionPricePercentageOfPrincipalAmountAtEventOfCertainNonOrdinaryCourseAssetSales_2" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentCovenantCompliance" xlink:label="DebtInstrumentCovenantCompliance" xlink:title="DebtInstrumentCovenantCompliance" />
    <link:label xlink:type="resource" xlink:label="label_DebtInstrumentCovenantCompliance" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DebtInstrumentCovenantCompliance" xml:lang="en-US" id="label_DebtInstrumentCovenantCompliance">Debt Instrument, Covenant Compliance</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtInstrumentCovenantCompliance" xlink:to="label_DebtInstrumentCovenantCompliance" xlink:title="Label : DebtInstrumentCovenantCompliance to label_DebtInstrumentCovenantCompliance" />
    <link:label xlink:type="resource" xlink:label="label_DebtInstrumentCovenantCompliance_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_DebtInstrumentCovenantCompliance_1" xml:lang="en-US" id="label_DebtInstrumentCovenantCompliance_1">Debt Instrument, Covenant Compliance</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtInstrumentCovenantCompliance" xlink:to="label_DebtInstrumentCovenantCompliance_1" xlink:title="Label : DebtInstrumentCovenantCompliance to label_DebtInstrumentCovenantCompliance_1" />
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    <link:label xlink:type="resource" xlink:label="label_WarrantsAndWarrantLiabilityTable" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_WarrantsAndWarrantLiabilityTable" xml:lang="en-US" id="label_WarrantsAndWarrantLiabilityTable">Schedule of information about warrants and warrant liability.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WarrantsAndWarrantLiabilityTable" xlink:to="label_WarrantsAndWarrantLiabilityTable" xlink:title="Label : WarrantsAndWarrantLiabilityTable to label_WarrantsAndWarrantLiabilityTable" />
    <link:label xlink:type="resource" xlink:label="label_WarrantsAndWarrantLiabilityTable_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_WarrantsAndWarrantLiabilityTable_1" xml:lang="en-US" id="label_WarrantsAndWarrantLiabilityTable_1">Warrants and Warrant Liability [Table]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WarrantsAndWarrantLiabilityTable" xlink:to="label_WarrantsAndWarrantLiabilityTable_1" xlink:title="Label : WarrantsAndWarrantLiabilityTable to label_WarrantsAndWarrantLiabilityTable_1" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_PublicWarrantsAndPrivatePlacementWarrantsMember" xlink:label="PublicWarrantsAndPrivatePlacementWarrantsMember" xlink:title="PublicWarrantsAndPrivatePlacementWarrantsMember" />
    <link:label xlink:type="resource" xlink:label="label_PublicWarrantsAndPrivatePlacementWarrantsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_PublicWarrantsAndPrivatePlacementWarrantsMember" xml:lang="en-US" id="label_PublicWarrantsAndPrivatePlacementWarrantsMember">Public Warrants and Private Placement Warrants [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PublicWarrantsAndPrivatePlacementWarrantsMember" xlink:to="label_PublicWarrantsAndPrivatePlacementWarrantsMember" xlink:title="Label : PublicWarrantsAndPrivatePlacementWarrantsMember to label_PublicWarrantsAndPrivatePlacementWarrantsMember" />
    <link:label xlink:type="resource" xlink:label="label_PublicWarrantsAndPrivatePlacementWarrantsMember_1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_PublicWarrantsAndPrivatePlacementWarrantsMember_1" xml:lang="en-US" id="label_PublicWarrantsAndPrivatePlacementWarrantsMember_1">This member stands for the information pertaining to "Public Warrants and Private Placement Warrants".</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PublicWarrantsAndPrivatePlacementWarrantsMember" xlink:to="label_PublicWarrantsAndPrivatePlacementWarrantsMember_1" xlink:title="Label : PublicWarrantsAndPrivatePlacementWarrantsMember to label_PublicWarrantsAndPrivatePlacementWarrantsMember_1" />
    <link:label xlink:type="resource" xlink:label="label_PublicWarrantsAndPrivatePlacementWarrantsMember_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_PublicWarrantsAndPrivatePlacementWarrantsMember_2" xml:lang="en-US" id="label_PublicWarrantsAndPrivatePlacementWarrantsMember_2">Public Warrants and Private Placement Warrants [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PublicWarrantsAndPrivatePlacementWarrantsMember" xlink:to="label_PublicWarrantsAndPrivatePlacementWarrantsMember_2" xlink:title="Label : PublicWarrantsAndPrivatePlacementWarrantsMember to label_PublicWarrantsAndPrivatePlacementWarrantsMember_2" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_PublicWarrantsMember" xlink:label="PublicWarrantsMember" xlink:title="PublicWarrantsMember" />
    <link:label xlink:type="resource" xlink:label="label_PublicWarrantsMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_PublicWarrantsMember" xml:lang="en-US" id="label_PublicWarrantsMember">This member stands for the information pertaining to public warrants.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PublicWarrantsMember" xlink:to="label_PublicWarrantsMember" xlink:title="Label : PublicWarrantsMember to label_PublicWarrantsMember" />
    <link:label xlink:type="resource" xlink:label="label_PublicWarrantsMember_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_PublicWarrantsMember_1" xml:lang="en-US" id="label_PublicWarrantsMember_1">Public Warrants [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PublicWarrantsMember" xlink:to="label_PublicWarrantsMember_1" xlink:title="Label : PublicWarrantsMember to label_PublicWarrantsMember_1" />
    <link:label xlink:type="resource" xlink:label="label_PublicWarrantsMember_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_PublicWarrantsMember_2" xml:lang="en-US" id="label_PublicWarrantsMember_2">Public Warrants [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PublicWarrantsMember" xlink:to="label_PublicWarrantsMember_2" xlink:title="Label : PublicWarrantsMember to label_PublicWarrantsMember_2" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_NotePurchaseAgreementAndIndentureAgreementMember" xlink:label="NotePurchaseAgreementAndIndentureAgreementMember" xlink:title="NotePurchaseAgreementAndIndentureAgreementMember" />
    <link:label xlink:type="resource" xlink:label="label_NotePurchaseAgreementAndIndentureAgreementMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_NotePurchaseAgreementAndIndentureAgreementMember" xml:lang="en-US" id="label_NotePurchaseAgreementAndIndentureAgreementMember">Note Purchase Agreement and Indenture Agreement [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NotePurchaseAgreementAndIndentureAgreementMember" xlink:to="label_NotePurchaseAgreementAndIndentureAgreementMember" xlink:title="Label : NotePurchaseAgreementAndIndentureAgreementMember to label_NotePurchaseAgreementAndIndentureAgreementMember" />
    <link:label xlink:type="resource" xlink:label="label_NotePurchaseAgreementAndIndentureAgreementMember_1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_NotePurchaseAgreementAndIndentureAgreementMember_1" xml:lang="en-US" id="label_NotePurchaseAgreementAndIndentureAgreementMember_1">This member stands for the information pertaining to "Note Purchase Agreement and Indenture Agreement" for a borrwing of reporting entity.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NotePurchaseAgreementAndIndentureAgreementMember" xlink:to="label_NotePurchaseAgreementAndIndentureAgreementMember_1" xlink:title="Label : NotePurchaseAgreementAndIndentureAgreementMember to label_NotePurchaseAgreementAndIndentureAgreementMember_1" />
    <link:label xlink:type="resource" xlink:label="label_NotePurchaseAgreementAndIndentureAgreementMember_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_NotePurchaseAgreementAndIndentureAgreementMember_2" xml:lang="en-US" id="label_NotePurchaseAgreementAndIndentureAgreementMember_2">Note Purchase Agreement and Indenture Agreement</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NotePurchaseAgreementAndIndentureAgreementMember" xlink:to="label_NotePurchaseAgreementAndIndentureAgreementMember_2" xlink:title="Label : NotePurchaseAgreementAndIndentureAgreementMember to label_NotePurchaseAgreementAndIndentureAgreementMember_2" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SecuredDebtMember" xlink:label="SecuredDebtMember" xlink:title="SecuredDebtMember" />
    <link:label xlink:type="resource" xlink:label="label_SecuredDebtMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_SecuredDebtMember" xml:lang="en-US" id="label_SecuredDebtMember">Senior Secured Notes due 2026 [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SecuredDebtMember" xlink:to="label_SecuredDebtMember" xlink:title="Label : SecuredDebtMember to label_SecuredDebtMember" />
    <link:label xlink:type="resource" xlink:label="label_SecuredDebtMember_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_SecuredDebtMember_1" xml:lang="en-US" id="label_SecuredDebtMember_1">Secured Debt [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SecuredDebtMember" xlink:to="label_SecuredDebtMember_1" xlink:title="Label : SecuredDebtMember to label_SecuredDebtMember_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SubsequentEventTypeAxis" xlink:label="SubsequentEventTypeAxis" xlink:title="SubsequentEventTypeAxis" />
    <link:label xlink:type="resource" xlink:label="label_SubsequentEventTypeAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_SubsequentEventTypeAxis" xml:lang="en-US" id="label_SubsequentEventTypeAxis">Subsequent Event Type [Axis]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SubsequentEventTypeAxis" xlink:to="label_SubsequentEventTypeAxis" xlink:title="Label : SubsequentEventTypeAxis to label_SubsequentEventTypeAxis" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SubsequentEventTypeDomain" xlink:label="SubsequentEventTypeDomain" xlink:title="SubsequentEventTypeDomain" />
    <link:label xlink:type="resource" xlink:label="label_SubsequentEventTypeDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_SubsequentEventTypeDomain" xml:lang="en-US" id="label_SubsequentEventTypeDomain">Subsequent Event Type [Domain]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SubsequentEventTypeDomain" xlink:to="label_SubsequentEventTypeDomain" xlink:title="Label : SubsequentEventTypeDomain to label_SubsequentEventTypeDomain" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SubsequentEventMember" xlink:label="SubsequentEventMember" xlink:title="SubsequentEventMember" />
    <link:label xlink:type="resource" xlink:label="label_SubsequentEventMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_SubsequentEventMember" xml:lang="en-US" id="label_SubsequentEventMember">Subsequent Event [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SubsequentEventMember" xlink:to="label_SubsequentEventMember" xlink:title="Label : SubsequentEventMember to label_SubsequentEventMember" />
    <link:label xlink:type="resource" xlink:label="label_SubsequentEventMember_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_SubsequentEventMember_1" xml:lang="en-US" id="label_SubsequentEventMember_1">Subsequent Event [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SubsequentEventMember" xlink:to="label_SubsequentEventMember_1" xlink:title="Label : SubsequentEventMember to label_SubsequentEventMember_1" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_WarrantsAndWarrantLiabilityDetailsLineItems" xlink:label="WarrantsAndWarrantLiabilityDetailsLineItems" xlink:title="WarrantsAndWarrantLiabilityDetailsLineItems" />
    <link:label xlink:type="resource" xlink:label="label_WarrantsAndWarrantLiabilityDetailsLineItems" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_WarrantsAndWarrantLiabilityDetailsLineItems" xml:lang="en-US" id="label_WarrantsAndWarrantLiabilityDetailsLineItems">Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WarrantsAndWarrantLiabilityDetailsLineItems" xlink:to="label_WarrantsAndWarrantLiabilityDetailsLineItems" xlink:title="Label : WarrantsAndWarrantLiabilityDetailsLineItems to label_WarrantsAndWarrantLiabilityDetailsLineItems" />
    <link:label xlink:type="resource" xlink:label="label_WarrantsAndWarrantLiabilityDetailsLineItems_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_WarrantsAndWarrantLiabilityDetailsLineItems_1" xml:lang="en-US" id="label_WarrantsAndWarrantLiabilityDetailsLineItems_1">Warrants and Warrant Liability Details [Line Items]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WarrantsAndWarrantLiabilityDetailsLineItems" xlink:to="label_WarrantsAndWarrantLiabilityDetailsLineItems_1" xlink:title="Label : WarrantsAndWarrantLiabilityDetailsLineItems to label_WarrantsAndWarrantLiabilityDetailsLineItems_1" />
    <link:label xlink:type="resource" xlink:label="label_WarrantsAndWarrantLiabilityDetailsLineItems_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_WarrantsAndWarrantLiabilityDetailsLineItems_2" xml:lang="en-US" id="label_WarrantsAndWarrantLiabilityDetailsLineItems_2">Warrants and Warrant Liability (Details) [Line Items]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WarrantsAndWarrantLiabilityDetailsLineItems" xlink:to="label_WarrantsAndWarrantLiabilityDetailsLineItems_2" xlink:title="Label : WarrantsAndWarrantLiabilityDetailsLineItems to label_WarrantsAndWarrantLiabilityDetailsLineItems_2" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SharesIssued" xlink:label="SharesIssued" xlink:title="SharesIssued" />
    <link:label xlink:type="resource" xlink:label="label_SharesIssued" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_SharesIssued" xml:lang="en-US" id="label_SharesIssued">Number of shares issued</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SharesIssued" xlink:to="label_SharesIssued" xlink:title="Label : SharesIssued to label_SharesIssued" />
    <link:label xlink:type="resource" xlink:label="label_SharesIssued_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_SharesIssued_1" xml:lang="en-US" id="label_SharesIssued_1">Shares, Issued</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SharesIssued" xlink:to="label_SharesIssued_1" xlink:title="Label : SharesIssued to label_SharesIssued_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight" xlink:label="ClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight" xlink:title="ClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight" />
    <link:label xlink:type="resource" xlink:label="label_ClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight" xml:lang="en-US" id="label_ClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight">Class of warrant or right number of securities called by each warrant or right</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight" xlink:to="label_ClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight" xlink:title="Label : ClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight to label_ClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight" />
    <link:label xlink:type="resource" xlink:label="label_ClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight_1" xml:lang="en-US" id="label_ClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight_1">Number of securities called by each warrant</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight" xlink:to="label_ClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight_1" xlink:title="Label : ClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight to label_ClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight_1" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_DescriptionOfWarrants" xlink:label="DescriptionOfWarrants" xlink:title="DescriptionOfWarrants" />
    <link:label xlink:type="resource" xlink:label="label_DescriptionOfWarrants" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_DescriptionOfWarrants" xml:lang="en-US" id="label_DescriptionOfWarrants">Description of warrants</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DescriptionOfWarrants" xlink:to="label_DescriptionOfWarrants" xlink:title="Label : DescriptionOfWarrants to label_DescriptionOfWarrants" />
    <link:label xlink:type="resource" xlink:label="label_DescriptionOfWarrants_1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_DescriptionOfWarrants_1" xml:lang="en-US" id="label_DescriptionOfWarrants_1">Description of warrants.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DescriptionOfWarrants" xlink:to="label_DescriptionOfWarrants_1" xlink:title="Label : DescriptionOfWarrants to label_DescriptionOfWarrants_1" />
    <link:label xlink:type="resource" xlink:label="label_DescriptionOfWarrants_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DescriptionOfWarrants_2" xml:lang="en-US" id="label_DescriptionOfWarrants_2">DescriptionOfWarrants</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DescriptionOfWarrants" xlink:to="label_DescriptionOfWarrants_2" xlink:title="Label : DescriptionOfWarrants to label_DescriptionOfWarrants_2" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_WarrantsAndRightsOutstandingTerm" xlink:label="WarrantsAndRightsOutstandingTerm" xlink:title="WarrantsAndRightsOutstandingTerm" />
    <link:label xlink:type="resource" xlink:label="label_WarrantsAndRightsOutstandingTerm" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_WarrantsAndRightsOutstandingTerm" xml:lang="en-US" id="label_WarrantsAndRightsOutstandingTerm">Warrants and Rights Outstanding, Term</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WarrantsAndRightsOutstandingTerm" xlink:to="label_WarrantsAndRightsOutstandingTerm" xlink:title="Label : WarrantsAndRightsOutstandingTerm to label_WarrantsAndRightsOutstandingTerm" />
    <link:label xlink:type="resource" xlink:label="label_WarrantsAndRightsOutstandingTerm_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_WarrantsAndRightsOutstandingTerm_1" xml:lang="en-US" id="label_WarrantsAndRightsOutstandingTerm_1">Warrants term</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WarrantsAndRightsOutstandingTerm" xlink:to="label_WarrantsAndRightsOutstandingTerm_1" xlink:title="Label : WarrantsAndRightsOutstandingTerm to label_WarrantsAndRightsOutstandingTerm_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_WarrantsAndRightsOutstandingMaturityDate" xlink:label="WarrantsAndRightsOutstandingMaturityDate" xlink:title="WarrantsAndRightsOutstandingMaturityDate" />
    <link:label xlink:type="resource" xlink:label="label_WarrantsAndRightsOutstandingMaturityDate" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_WarrantsAndRightsOutstandingMaturityDate" xml:lang="en-US" id="label_WarrantsAndRightsOutstandingMaturityDate">Warrants, maturity date</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WarrantsAndRightsOutstandingMaturityDate" xlink:to="label_WarrantsAndRightsOutstandingMaturityDate" xlink:title="Label : WarrantsAndRightsOutstandingMaturityDate to label_WarrantsAndRightsOutstandingMaturityDate" />
    <link:label xlink:type="resource" xlink:label="label_WarrantsAndRightsOutstandingMaturityDate_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_WarrantsAndRightsOutstandingMaturityDate_1" xml:lang="en-US" id="label_WarrantsAndRightsOutstandingMaturityDate_1">Warrants and Rights Outstanding, Maturity Date</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WarrantsAndRightsOutstandingMaturityDate" xlink:to="label_WarrantsAndRightsOutstandingMaturityDate_1" xlink:title="Label : WarrantsAndRightsOutstandingMaturityDate to label_WarrantsAndRightsOutstandingMaturityDate_1" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_WarrantsIssued" xlink:label="WarrantsIssued" xlink:title="WarrantsIssued" />
    <link:label xlink:type="resource" xlink:label="label_WarrantsIssued" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_WarrantsIssued" xml:lang="en-US" id="label_WarrantsIssued">WarrantsIssued</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WarrantsIssued" xlink:to="label_WarrantsIssued" xlink:title="Label : WarrantsIssued to label_WarrantsIssued" />
    <link:label xlink:type="resource" xlink:label="label_WarrantsIssued_1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_WarrantsIssued_1" xml:lang="en-US" id="label_WarrantsIssued_1">The amount of warrants issued.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WarrantsIssued" xlink:to="label_WarrantsIssued_1" xlink:title="Label : WarrantsIssued to label_WarrantsIssued_1" />
    <link:label xlink:type="resource" xlink:label="label_WarrantsIssued_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_WarrantsIssued_2" xml:lang="en-US" id="label_WarrantsIssued_2">Warrants issued</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WarrantsIssued" xlink:to="label_WarrantsIssued_2" xlink:title="Label : WarrantsIssued to label_WarrantsIssued_2" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_StockReclassifiedDuringPeriodSharesReclassificationFromWarrantLiabilityToEquity" xlink:label="StockReclassifiedDuringPeriodSharesReclassificationFromWarrantLiabilityToEquity" xlink:title="StockReclassifiedDuringPeriodSharesReclassificationFromWarrantLiabilityToEquity" />
    <link:label xlink:type="resource" xlink:label="label_StockReclassifiedDuringPeriodSharesReclassificationFromWarrantLiabilityToEquity" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_StockReclassifiedDuringPeriodSharesReclassificationFromWarrantLiabilityToEquity" xml:lang="en-US" id="label_StockReclassifiedDuringPeriodSharesReclassificationFromWarrantLiabilityToEquity">Number of warrant shares reclassified during the period as a result of the conversion of convertible liability.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockReclassifiedDuringPeriodSharesReclassificationFromWarrantLiabilityToEquity" xlink:to="label_StockReclassifiedDuringPeriodSharesReclassificationFromWarrantLiabilityToEquity" xlink:title="Label : StockReclassifiedDuringPeriodSharesReclassificationFromWarrantLiabilityToEquity to label_StockReclassifiedDuringPeriodSharesReclassificationFromWarrantLiabilityToEquity" />
    <link:label xlink:type="resource" xlink:label="label_StockReclassifiedDuringPeriodSharesReclassificationFromWarrantLiabilityToEquity_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_StockReclassifiedDuringPeriodSharesReclassificationFromWarrantLiabilityToEquity_1" xml:lang="en-US" id="label_StockReclassifiedDuringPeriodSharesReclassificationFromWarrantLiabilityToEquity_1">Stock Reclassified During Period Shares Reclassification From Warrant Liability To Equity</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockReclassifiedDuringPeriodSharesReclassificationFromWarrantLiabilityToEquity" xlink:to="label_StockReclassifiedDuringPeriodSharesReclassificationFromWarrantLiabilityToEquity_1" xlink:title="Label : StockReclassifiedDuringPeriodSharesReclassificationFromWarrantLiabilityToEquity to label_StockReclassifiedDuringPeriodSharesReclassificationFromWarrantLiabilityToEquity_1" />
    <link:label xlink:type="resource" xlink:label="label_StockReclassifiedDuringPeriodSharesReclassificationFromWarrantLiabilityToEquity_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_StockReclassifiedDuringPeriodSharesReclassificationFromWarrantLiabilityToEquity_2" xml:lang="en-US" id="label_StockReclassifiedDuringPeriodSharesReclassificationFromWarrantLiabilityToEquity_2">Reclassification from warrant liability to equity (in shares)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockReclassifiedDuringPeriodSharesReclassificationFromWarrantLiabilityToEquity" xlink:to="label_StockReclassifiedDuringPeriodSharesReclassificationFromWarrantLiabilityToEquity_2" xlink:title="Label : StockReclassifiedDuringPeriodSharesReclassificationFromWarrantLiabilityToEquity to label_StockReclassifiedDuringPeriodSharesReclassificationFromWarrantLiabilityToEquity_2" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_WarrantsToPurchase" xlink:label="WarrantsToPurchase" xlink:title="WarrantsToPurchase" />
    <link:label xlink:type="resource" xlink:label="label_WarrantsToPurchase" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_WarrantsToPurchase" xml:lang="en-US" id="label_WarrantsToPurchase">Number of warrants to purchase.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WarrantsToPurchase" xlink:to="label_WarrantsToPurchase" xlink:title="Label : WarrantsToPurchase to label_WarrantsToPurchase" />
    <link:label xlink:type="resource" xlink:label="label_WarrantsToPurchase_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_WarrantsToPurchase_1" xml:lang="en-US" id="label_WarrantsToPurchase_1">Warrants to purchase</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WarrantsToPurchase" xlink:to="label_WarrantsToPurchase_1" xlink:title="Label : WarrantsToPurchase to label_WarrantsToPurchase_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfStockByClassTable" xlink:label="ScheduleOfStockByClassTable" xlink:title="ScheduleOfStockByClassTable" />
    <link:label xlink:type="resource" xlink:label="label_ScheduleOfStockByClassTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ScheduleOfStockByClassTable" xml:lang="en-US" id="label_ScheduleOfStockByClassTable">Common Stock and Convertible Preferred Units Details [Table]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfStockByClassTable" xlink:to="label_ScheduleOfStockByClassTable" xlink:title="Label : ScheduleOfStockByClassTable to label_ScheduleOfStockByClassTable" />
    <link:label xlink:type="resource" xlink:label="label_ScheduleOfStockByClassTable_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ScheduleOfStockByClassTable_1" xml:lang="en-US" id="label_ScheduleOfStockByClassTable_1">Schedule of Stock by Class [Table]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfStockByClassTable" xlink:to="label_ScheduleOfStockByClassTable_1" xlink:title="Label : ScheduleOfStockByClassTable to label_ScheduleOfStockByClassTable_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementClassOfStockAxis" xlink:label="StatementClassOfStockAxis" xlink:title="StatementClassOfStockAxis" />
    <link:label xlink:type="resource" xlink:label="label_StatementClassOfStockAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_StatementClassOfStockAxis" xml:lang="en-US" id="label_StatementClassOfStockAxis">Class of Stock [Axis]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StatementClassOfStockAxis" xlink:to="label_StatementClassOfStockAxis" xlink:title="Label : StatementClassOfStockAxis to label_StatementClassOfStockAxis" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ClassOfStockDomain" xlink:label="ClassOfStockDomain" xlink:title="ClassOfStockDomain" />
    <link:label xlink:type="resource" xlink:label="label_ClassOfStockDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ClassOfStockDomain" xml:lang="en-US" id="label_ClassOfStockDomain">Class of Stock [Domain]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ClassOfStockDomain" xlink:to="label_ClassOfStockDomain" xlink:title="Label : ClassOfStockDomain to label_ClassOfStockDomain" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_ClassA1CommonUnitsMember" xlink:label="ClassA1CommonUnitsMember" xlink:title="ClassA1CommonUnitsMember" />
    <link:label xlink:type="resource" xlink:label="label_ClassA1CommonUnitsMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_ClassA1CommonUnitsMember" xml:lang="en-US" id="label_ClassA1CommonUnitsMember">This member stands for information pertaining to Class A-1 Common Units.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ClassA1CommonUnitsMember" xlink:to="label_ClassA1CommonUnitsMember" xlink:title="Label : ClassA1CommonUnitsMember to label_ClassA1CommonUnitsMember" />
    <link:label xlink:type="resource" xlink:label="label_ClassA1CommonUnitsMember_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ClassA1CommonUnitsMember_1" xml:lang="en-US" id="label_ClassA1CommonUnitsMember_1">Class A-1 Common Units [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ClassA1CommonUnitsMember" xlink:to="label_ClassA1CommonUnitsMember_1" xlink:title="Label : ClassA1CommonUnitsMember to label_ClassA1CommonUnitsMember_1" />
    <link:label xlink:type="resource" xlink:label="label_ClassA1CommonUnitsMember_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ClassA1CommonUnitsMember_2" xml:lang="en-US" id="label_ClassA1CommonUnitsMember_2">ClassA1CommonUnitsMember</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ClassA1CommonUnitsMember" xlink:to="label_ClassA1CommonUnitsMember_2" xlink:title="Label : ClassA1CommonUnitsMember to label_ClassA1CommonUnitsMember_2" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_ClassCRedeemablePreferredUnitsMember" xlink:label="ClassCRedeemablePreferredUnitsMember" xlink:title="ClassCRedeemablePreferredUnitsMember" />
    <link:label xlink:type="resource" xlink:label="label_ClassCRedeemablePreferredUnitsMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_ClassCRedeemablePreferredUnitsMember" xml:lang="en-US" id="label_ClassCRedeemablePreferredUnitsMember">This member stands for the information pertaining to Class C of redeemable convertible preferred stock unit.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ClassCRedeemablePreferredUnitsMember" xlink:to="label_ClassCRedeemablePreferredUnitsMember" xlink:title="Label : ClassCRedeemablePreferredUnitsMember to label_ClassCRedeemablePreferredUnitsMember" />
    <link:label xlink:type="resource" xlink:label="label_ClassCRedeemablePreferredUnitsMember_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ClassCRedeemablePreferredUnitsMember_1" xml:lang="en-US" id="label_ClassCRedeemablePreferredUnitsMember_1">Class C Redeemable Preferred Units [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ClassCRedeemablePreferredUnitsMember" xlink:to="label_ClassCRedeemablePreferredUnitsMember_1" xlink:title="Label : ClassCRedeemablePreferredUnitsMember to label_ClassCRedeemablePreferredUnitsMember_1" />
    <link:label xlink:type="resource" xlink:label="label_ClassCRedeemablePreferredUnitsMember_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ClassCRedeemablePreferredUnitsMember_2" xml:lang="en-US" id="label_ClassCRedeemablePreferredUnitsMember_2">ClassCRedeemablePreferredUnitsMember</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ClassCRedeemablePreferredUnitsMember" xlink:to="label_ClassCRedeemablePreferredUnitsMember_2" xlink:title="Label : ClassCRedeemablePreferredUnitsMember to label_ClassCRedeemablePreferredUnitsMember_2" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_ClassDRedeemablePreferredUnitsMember" xlink:label="ClassDRedeemablePreferredUnitsMember" xlink:title="ClassDRedeemablePreferredUnitsMember" />
    <link:label xlink:type="resource" xlink:label="label_ClassDRedeemablePreferredUnitsMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_ClassDRedeemablePreferredUnitsMember" xml:lang="en-US" id="label_ClassDRedeemablePreferredUnitsMember">This member stands for the information pertaining to Class D of redeemable convertible preferred stock units.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ClassDRedeemablePreferredUnitsMember" xlink:to="label_ClassDRedeemablePreferredUnitsMember" xlink:title="Label : ClassDRedeemablePreferredUnitsMember to label_ClassDRedeemablePreferredUnitsMember" />
    <link:label xlink:type="resource" xlink:label="label_ClassDRedeemablePreferredUnitsMember_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ClassDRedeemablePreferredUnitsMember_1" xml:lang="en-US" id="label_ClassDRedeemablePreferredUnitsMember_1">Class D Redeemable Preferred Units [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ClassDRedeemablePreferredUnitsMember" xlink:to="label_ClassDRedeemablePreferredUnitsMember_1" xlink:title="Label : ClassDRedeemablePreferredUnitsMember to label_ClassDRedeemablePreferredUnitsMember_1" />
    <link:label xlink:type="resource" xlink:label="label_ClassDRedeemablePreferredUnitsMember_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ClassDRedeemablePreferredUnitsMember_2" xml:lang="en-US" id="label_ClassDRedeemablePreferredUnitsMember_2">ClassDRedeemablePreferredUnitsMember</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ClassDRedeemablePreferredUnitsMember" xlink:to="label_ClassDRedeemablePreferredUnitsMember_2" xlink:title="Label : ClassDRedeemablePreferredUnitsMember to label_ClassDRedeemablePreferredUnitsMember_2" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ClassOfStockLineItems" xlink:label="ClassOfStockLineItems" xlink:title="ClassOfStockLineItems" />
    <link:label xlink:type="resource" xlink:label="label_ClassOfStockLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ClassOfStockLineItems" xml:lang="en-US" id="label_ClassOfStockLineItems">Common Stock and Convertible Preferred Units (Details) [Line Items]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ClassOfStockLineItems" xlink:to="label_ClassOfStockLineItems" xlink:title="Label : ClassOfStockLineItems to label_ClassOfStockLineItems" />
    <link:label xlink:type="resource" xlink:label="label_ClassOfStockLineItems_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ClassOfStockLineItems_1" xml:lang="en-US" id="label_ClassOfStockLineItems_1">Class of Stock [Line Items]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ClassOfStockLineItems" xlink:to="label_ClassOfStockLineItems_1" xlink:title="Label : ClassOfStockLineItems to label_ClassOfStockLineItems_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PreferredStockSharesAuthorized" xlink:label="PreferredStockSharesAuthorized" xlink:title="PreferredStockSharesAuthorized" />
    <link:label xlink:type="resource" xlink:label="label_PreferredStockSharesAuthorized" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_PreferredStockSharesAuthorized" xml:lang="en-US" id="label_PreferredStockSharesAuthorized">Preferred stock, shares authorized</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PreferredStockSharesAuthorized" xlink:to="label_PreferredStockSharesAuthorized" xlink:title="Label : PreferredStockSharesAuthorized to label_PreferredStockSharesAuthorized" />
    <link:label xlink:type="resource" xlink:label="label_PreferredStockSharesAuthorized_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_PreferredStockSharesAuthorized_1" xml:lang="en-US" id="label_PreferredStockSharesAuthorized_1">Preferred Stock, Shares Authorized</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PreferredStockSharesAuthorized" xlink:to="label_PreferredStockSharesAuthorized_1" xlink:title="Label : PreferredStockSharesAuthorized to label_PreferredStockSharesAuthorized_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PreferredStockSharesIssued" xlink:label="PreferredStockSharesIssued" xlink:title="PreferredStockSharesIssued" />
    <link:label xlink:type="resource" xlink:label="label_PreferredStockSharesIssued" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_PreferredStockSharesIssued" xml:lang="en-US" id="label_PreferredStockSharesIssued">Preferred Stock, Shares Issued</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PreferredStockSharesIssued" xlink:to="label_PreferredStockSharesIssued" xlink:title="Label : PreferredStockSharesIssued to label_PreferredStockSharesIssued" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PreferredStockSharesOutstanding" xlink:label="PreferredStockSharesOutstanding" xlink:title="PreferredStockSharesOutstanding" />
    <link:label xlink:type="resource" xlink:label="label_PreferredStockSharesOutstanding" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_PreferredStockSharesOutstanding" xml:lang="en-US" id="label_PreferredStockSharesOutstanding">Preferred Stock, Shares Outstanding</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PreferredStockSharesOutstanding" xlink:to="label_PreferredStockSharesOutstanding" xlink:title="Label : PreferredStockSharesOutstanding to label_PreferredStockSharesOutstanding" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_CapitalStockSharesAuthorized" xlink:label="CapitalStockSharesAuthorized" xlink:title="CapitalStockSharesAuthorized" />
    <link:label xlink:type="resource" xlink:label="label_CapitalStockSharesAuthorized" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_CapitalStockSharesAuthorized" xml:lang="en-US" id="label_CapitalStockSharesAuthorized">Represents the maximum number of shares permitted to be issued by an entity's charter and bylaws.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CapitalStockSharesAuthorized" xlink:to="label_CapitalStockSharesAuthorized" xlink:title="Label : CapitalStockSharesAuthorized to label_CapitalStockSharesAuthorized" />
    <link:label xlink:type="resource" xlink:label="label_CapitalStockSharesAuthorized_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_CapitalStockSharesAuthorized_1" xml:lang="en-US" id="label_CapitalStockSharesAuthorized_1">Capital stock shares authorized</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CapitalStockSharesAuthorized" xlink:to="label_CapitalStockSharesAuthorized_1" xlink:title="Label : CapitalStockSharesAuthorized to label_CapitalStockSharesAuthorized_1" />
    <link:label xlink:type="resource" xlink:label="label_CapitalStockSharesAuthorized_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CapitalStockSharesAuthorized_2" xml:lang="en-US" id="label_CapitalStockSharesAuthorized_2">Capital Stock Shares Authorized</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CapitalStockSharesAuthorized" xlink:to="label_CapitalStockSharesAuthorized_2" xlink:title="Label : CapitalStockSharesAuthorized to label_CapitalStockSharesAuthorized_2" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_CapitalStockParOrStatedValuePerShare" xlink:label="CapitalStockParOrStatedValuePerShare" xlink:title="CapitalStockParOrStatedValuePerShare" />
    <link:label xlink:type="resource" xlink:label="label_CapitalStockParOrStatedValuePerShare" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_CapitalStockParOrStatedValuePerShare" xml:lang="en-US" id="label_CapitalStockParOrStatedValuePerShare">Represents the face amount or stated value per share of capital stock.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CapitalStockParOrStatedValuePerShare" xlink:to="label_CapitalStockParOrStatedValuePerShare" xlink:title="Label : CapitalStockParOrStatedValuePerShare to label_CapitalStockParOrStatedValuePerShare" />
    <link:label xlink:type="resource" xlink:label="label_CapitalStockParOrStatedValuePerShare_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_CapitalStockParOrStatedValuePerShare_1" xml:lang="en-US" id="label_CapitalStockParOrStatedValuePerShare_1">Capital stock par or stated value per share</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CapitalStockParOrStatedValuePerShare" xlink:to="label_CapitalStockParOrStatedValuePerShare_1" xlink:title="Label : CapitalStockParOrStatedValuePerShare to label_CapitalStockParOrStatedValuePerShare_1" />
    <link:label xlink:type="resource" xlink:label="label_CapitalStockParOrStatedValuePerShare_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CapitalStockParOrStatedValuePerShare_2" xml:lang="en-US" id="label_CapitalStockParOrStatedValuePerShare_2">Capital Stock Par Or Stated Value Per Share</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CapitalStockParOrStatedValuePerShare" xlink:to="label_CapitalStockParOrStatedValuePerShare_2" xlink:title="Label : CapitalStockParOrStatedValuePerShare to label_CapitalStockParOrStatedValuePerShare_2" />
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    <link:label xlink:type="resource" xlink:label="label_IncomeTaxesDetailsTable" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_IncomeTaxesDetailsTable" xml:lang="en-US" id="label_IncomeTaxesDetailsTable">Schedule of information about income tax details.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncomeTaxesDetailsTable" xlink:to="label_IncomeTaxesDetailsTable" xlink:title="Label : IncomeTaxesDetailsTable to label_IncomeTaxesDetailsTable" />
    <link:label xlink:type="resource" xlink:label="label_IncomeTaxesDetailsTable_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_IncomeTaxesDetailsTable_1" xml:lang="en-US" id="label_IncomeTaxesDetailsTable_1">Income Taxes Details [Table]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncomeTaxesDetailsTable" xlink:to="label_IncomeTaxesDetailsTable_1" xlink:title="Label : IncomeTaxesDetailsTable to label_IncomeTaxesDetailsTable_1" />
    <link:label xlink:type="resource" xlink:label="label_IncomeTaxesDetailsTable_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_IncomeTaxesDetailsTable_2" xml:lang="en-US" id="label_IncomeTaxesDetailsTable_2">Income Taxes Details [Table]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncomeTaxesDetailsTable" xlink:to="label_IncomeTaxesDetailsTable_2" xlink:title="Label : IncomeTaxesDetailsTable to label_IncomeTaxesDetailsTable_2" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxAuthorityAxis" xlink:label="IncomeTaxAuthorityAxis" xlink:title="IncomeTaxAuthorityAxis" />
    <link:label xlink:type="resource" xlink:label="label_IncomeTaxAuthorityAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_IncomeTaxAuthorityAxis" xml:lang="en-US" id="label_IncomeTaxAuthorityAxis">Income Tax Authority [Axis]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncomeTaxAuthorityAxis" xlink:to="label_IncomeTaxAuthorityAxis" xlink:title="Label : IncomeTaxAuthorityAxis to label_IncomeTaxAuthorityAxis" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxAuthorityDomain" xlink:label="IncomeTaxAuthorityDomain" xlink:title="IncomeTaxAuthorityDomain" />
    <link:label xlink:type="resource" xlink:label="label_IncomeTaxAuthorityDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_IncomeTaxAuthorityDomain" xml:lang="en-US" id="label_IncomeTaxAuthorityDomain">Income Tax Authority [Domain]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncomeTaxAuthorityDomain" xlink:to="label_IncomeTaxAuthorityDomain" xlink:title="Label : IncomeTaxAuthorityDomain to label_IncomeTaxAuthorityDomain" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InternalRevenueServiceIRSMember" xlink:label="InternalRevenueServiceIRSMember" xlink:title="InternalRevenueServiceIRSMember" />
    <link:label xlink:type="resource" xlink:label="label_InternalRevenueServiceIRSMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_InternalRevenueServiceIRSMember" xml:lang="en-US" id="label_InternalRevenueServiceIRSMember">U.S. Federal and State [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InternalRevenueServiceIRSMember" xlink:to="label_InternalRevenueServiceIRSMember" xlink:title="Label : InternalRevenueServiceIRSMember to label_InternalRevenueServiceIRSMember" />
    <link:label xlink:type="resource" xlink:label="label_InternalRevenueServiceIRSMember_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_InternalRevenueServiceIRSMember_1" xml:lang="en-US" id="label_InternalRevenueServiceIRSMember_1">Internal Revenue Service (IRS) [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InternalRevenueServiceIRSMember" xlink:to="label_InternalRevenueServiceIRSMember_1" xlink:title="Label : InternalRevenueServiceIRSMember to label_InternalRevenueServiceIRSMember_1" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_USFederalAndStateMember" xlink:label="USFederalAndStateMember" xlink:title="USFederalAndStateMember" />
    <link:label xlink:type="resource" xlink:label="label_USFederalAndStateMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_USFederalAndStateMember" xml:lang="en-US" id="label_USFederalAndStateMember">This member stands for information pertaining to "U.S. Federal and State".</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="USFederalAndStateMember" xlink:to="label_USFederalAndStateMember" xlink:title="Label : USFederalAndStateMember to label_USFederalAndStateMember" />
    <link:label xlink:type="resource" xlink:label="label_USFederalAndStateMember_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_USFederalAndStateMember_1" xml:lang="en-US" id="label_USFederalAndStateMember_1">U.S. Federal and State [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="USFederalAndStateMember" xlink:to="label_USFederalAndStateMember_1" xlink:title="Label : USFederalAndStateMember to label_USFederalAndStateMember_1" />
    <link:label xlink:type="resource" xlink:label="label_USFederalAndStateMember_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_USFederalAndStateMember_2" xml:lang="en-US" id="label_USFederalAndStateMember_2">U.S. Federal and State [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="USFederalAndStateMember" xlink:to="label_USFederalAndStateMember_2" xlink:title="Label : USFederalAndStateMember to label_USFederalAndStateMember_2" />
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    <link:label xlink:type="resource" xlink:label="label_IncomeTaxesDetailsLineItems" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_IncomeTaxesDetailsLineItems" xml:lang="en-US" id="label_IncomeTaxesDetailsLineItems">Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.</link:label>
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    <link:label xlink:type="resource" xlink:label="label_IncomeTaxesDetailsLineItems_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_IncomeTaxesDetailsLineItems_1" xml:lang="en-US" id="label_IncomeTaxesDetailsLineItems_1">Income Taxes (Details) [Line Items]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncomeTaxesDetailsLineItems" xlink:to="label_IncomeTaxesDetailsLineItems_1" xlink:title="Label : IncomeTaxesDetailsLineItems to label_IncomeTaxesDetailsLineItems_1" />
    <link:label xlink:type="resource" xlink:label="label_IncomeTaxesDetailsLineItems_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_IncomeTaxesDetailsLineItems_2" xml:lang="en-US" id="label_IncomeTaxesDetailsLineItems_2">Income Taxes (Details) [Line Items]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncomeTaxesDetailsLineItems" xlink:to="label_IncomeTaxesDetailsLineItems_2" xlink:title="Label : IncomeTaxesDetailsLineItems to label_IncomeTaxesDetailsLineItems_2" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate" xlink:label="EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate" xlink:title="EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate" />
    <link:label xlink:type="resource" xlink:label="label_EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate" xml:lang="en-US" id="label_EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate">Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Percent</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate" xlink:to="label_EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate" xlink:title="Label : EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate to label_EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate" />
    <link:label xlink:type="resource" xlink:label="label_EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate_1" xml:lang="en-US" id="label_EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate_1">Effective tax rate</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate" xlink:to="label_EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate_1" xlink:title="Label : EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate to label_EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedTable" xlink:label="ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedTable" xlink:title="ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedTable" />
    <link:label xlink:type="resource" xlink:label="label_ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedTable" xml:lang="en-US" id="label_ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedTable">Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedTable" xlink:to="label_ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedTable" xlink:title="Label : ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedTable to label_ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedTable" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ConsolidationItemsAxis" xlink:label="ConsolidationItemsAxis" xlink:title="ConsolidationItemsAxis" />
    <link:label xlink:type="resource" xlink:label="label_ConsolidationItemsAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ConsolidationItemsAxis" xml:lang="en-US" id="label_ConsolidationItemsAxis">Consolidation Items [Axis]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ConsolidationItemsAxis" xlink:to="label_ConsolidationItemsAxis" xlink:title="Label : ConsolidationItemsAxis to label_ConsolidationItemsAxis" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ConsolidationItemsDomain" xlink:label="ConsolidationItemsDomain" xlink:title="ConsolidationItemsDomain" />
    <link:label xlink:type="resource" xlink:label="label_ConsolidationItemsDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ConsolidationItemsDomain" xml:lang="en-US" id="label_ConsolidationItemsDomain">Consolidation Items [Domain]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ConsolidationItemsDomain" xlink:to="label_ConsolidationItemsDomain" xlink:title="Label : ConsolidationItemsDomain to label_ConsolidationItemsDomain" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingSegmentsMember" xlink:label="OperatingSegmentsMember" xlink:title="OperatingSegmentsMember" />
    <link:label xlink:type="resource" xlink:label="label_OperatingSegmentsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_OperatingSegmentsMember" xml:lang="en-US" id="label_OperatingSegmentsMember">Operating Segment</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OperatingSegmentsMember" xlink:to="label_OperatingSegmentsMember" xlink:title="Label : OperatingSegmentsMember to label_OperatingSegmentsMember" />
    <link:label xlink:type="resource" xlink:label="label_OperatingSegmentsMember_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_OperatingSegmentsMember_1" xml:lang="en-US" id="label_OperatingSegmentsMember_1">Operating Segments [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OperatingSegmentsMember" xlink:to="label_OperatingSegmentsMember_1" xlink:title="Label : OperatingSegmentsMember to label_OperatingSegmentsMember_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems" xlink:label="SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems" xlink:title="SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems" />
    <link:label xlink:type="resource" xlink:label="label_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems" xml:lang="en-US" id="label_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems">Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems" xlink:to="label_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems" xlink:title="Label : SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems to label_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SegmentReportingInformationProfitLossAbstract" xlink:label="SegmentReportingInformationProfitLossAbstract" xlink:title="SegmentReportingInformationProfitLossAbstract" />
    <link:label xlink:type="resource" xlink:label="label_SegmentReportingInformationProfitLossAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_SegmentReportingInformationProfitLossAbstract" xml:lang="en-US" id="label_SegmentReportingInformationProfitLossAbstract">Less:</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SegmentReportingInformationProfitLossAbstract" xlink:to="label_SegmentReportingInformationProfitLossAbstract" xlink:title="Label : SegmentReportingInformationProfitLossAbstract to label_SegmentReportingInformationProfitLossAbstract" />
    <link:label xlink:type="resource" xlink:label="label_SegmentReportingInformationProfitLossAbstract_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_SegmentReportingInformationProfitLossAbstract_1" xml:lang="en-US" id="label_SegmentReportingInformationProfitLossAbstract_1">Segment Reporting Information, Profit (Loss) [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SegmentReportingInformationProfitLossAbstract" xlink:to="label_SegmentReportingInformationProfitLossAbstract_1" xlink:title="Label : SegmentReportingInformationProfitLossAbstract to label_SegmentReportingInformationProfitLossAbstract_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DepreciationAndAmortization" xlink:label="DepreciationAndAmortization" xlink:title="DepreciationAndAmortization" />
    <link:label xlink:type="resource" xlink:label="label_DepreciationAndAmortization" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_DepreciationAndAmortization" xml:lang="en-US" id="label_DepreciationAndAmortization">Depreciation and amortization</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DepreciationAndAmortization" xlink:to="label_DepreciationAndAmortization" xlink:title="Label : DepreciationAndAmortization to label_DepreciationAndAmortization" />
    <link:label xlink:type="resource" xlink:label="label_DepreciationAndAmortization_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DepreciationAndAmortization_1" xml:lang="en-US" id="label_DepreciationAndAmortization_1">Depreciation, Depletion and Amortization, Nonproduction</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DepreciationAndAmortization" xlink:to="label_DepreciationAndAmortization_1" xlink:title="Label : DepreciationAndAmortization to label_DepreciationAndAmortization_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InterestIncomeExpenseNet" xlink:label="InterestIncomeExpenseNet" xlink:title="InterestIncomeExpenseNet" />
    <link:label xlink:type="resource" xlink:label="label_InterestIncomeExpenseNet" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_InterestIncomeExpenseNet" xml:lang="en-US" id="label_InterestIncomeExpenseNet">Interest expense, net</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InterestIncomeExpenseNet" xlink:to="label_InterestIncomeExpenseNet" xlink:title="Label : InterestIncomeExpenseNet to label_InterestIncomeExpenseNet" />
    <link:label xlink:type="resource" xlink:label="label_InterestIncomeExpenseNet_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_InterestIncomeExpenseNet_1" xml:lang="en-US" id="label_InterestIncomeExpenseNet_1">Interest Income (Expense), Net</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InterestIncomeExpenseNet" xlink:to="label_InterestIncomeExpenseNet_1" xlink:title="Label : InterestIncomeExpenseNet to label_InterestIncomeExpenseNet_1" />
    <link:label xlink:type="resource" xlink:label="label_InterestIncomeExpenseNet_2" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:title="label_InterestIncomeExpenseNet_2" xml:lang="en-US" id="label_InterestIncomeExpenseNet_2">Interest expense, net</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InterestIncomeExpenseNet" xlink:to="label_InterestIncomeExpenseNet_2" xlink:title="Label : InterestIncomeExpenseNet to label_InterestIncomeExpenseNet_2" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_GainLossOnChangeInFairValueOfWarrantsAndDerivativeLiabilities" xlink:label="GainLossOnChangeInFairValueOfWarrantsAndDerivativeLiabilities" xlink:title="GainLossOnChangeInFairValueOfWarrantsAndDerivativeLiabilities" />
    <link:label xlink:type="resource" xlink:label="label_GainLossOnChangeInFairValueOfWarrantsAndDerivativeLiabilities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_GainLossOnChangeInFairValueOfWarrantsAndDerivativeLiabilities" xml:lang="en-US" id="label_GainLossOnChangeInFairValueOfWarrantsAndDerivativeLiabilities">Gain (Loss) on Change in Fair Value of Warrants and Derivative Liabilities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="GainLossOnChangeInFairValueOfWarrantsAndDerivativeLiabilities" xlink:to="label_GainLossOnChangeInFairValueOfWarrantsAndDerivativeLiabilities" xlink:title="Label : GainLossOnChangeInFairValueOfWarrantsAndDerivativeLiabilities to label_GainLossOnChangeInFairValueOfWarrantsAndDerivativeLiabilities" />
    <link:label xlink:type="resource" xlink:label="label_GainLossOnChangeInFairValueOfWarrantsAndDerivativeLiabilities_1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_GainLossOnChangeInFairValueOfWarrantsAndDerivativeLiabilities_1" xml:lang="en-US" id="label_GainLossOnChangeInFairValueOfWarrantsAndDerivativeLiabilities_1">The amount of gain (loss) on change in fair value of warrants and derivative liabilities.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="GainLossOnChangeInFairValueOfWarrantsAndDerivativeLiabilities" xlink:to="label_GainLossOnChangeInFairValueOfWarrantsAndDerivativeLiabilities_1" xlink:title="Label : GainLossOnChangeInFairValueOfWarrantsAndDerivativeLiabilities to label_GainLossOnChangeInFairValueOfWarrantsAndDerivativeLiabilities_1" />
    <link:label xlink:type="resource" xlink:label="label_GainLossOnChangeInFairValueOfWarrantsAndDerivativeLiabilities_2" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:title="label_GainLossOnChangeInFairValueOfWarrantsAndDerivativeLiabilities_2" xml:lang="en-US" id="label_GainLossOnChangeInFairValueOfWarrantsAndDerivativeLiabilities_2">Change in fair value of warrants and derivative liabilities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="GainLossOnChangeInFairValueOfWarrantsAndDerivativeLiabilities" xlink:to="label_GainLossOnChangeInFairValueOfWarrantsAndDerivativeLiabilities_2" xlink:title="Label : GainLossOnChangeInFairValueOfWarrantsAndDerivativeLiabilities to label_GainLossOnChangeInFairValueOfWarrantsAndDerivativeLiabilities_2" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedAbstract" xlink:label="ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedAbstract" xlink:title="ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedAbstract" />
    <link:label xlink:type="resource" xlink:label="label_ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedAbstract" xml:lang="en-US" id="label_ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedAbstract">Reconciliation to consolidated net loss:</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedAbstract" xlink:to="label_ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedAbstract" xlink:title="Label : ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedAbstract to label_ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedAbstract" />
    <link:label xlink:type="resource" xlink:label="label_ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedAbstract_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedAbstract_1" xml:lang="en-US" id="label_ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedAbstract_1">Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedAbstract" xlink:to="label_ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedAbstract_1" xlink:title="Label : ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedAbstract to label_ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedAbstract_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfEntityWideRevenueByMajorCustomersByReportingSegmentsTable" xlink:label="ScheduleOfEntityWideRevenueByMajorCustomersByReportingSegmentsTable" xlink:title="ScheduleOfEntityWideRevenueByMajorCustomersByReportingSegmentsTable" />
    <link:label xlink:type="resource" xlink:label="label_ScheduleOfEntityWideRevenueByMajorCustomersByReportingSegmentsTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ScheduleOfEntityWideRevenueByMajorCustomersByReportingSegmentsTable" xml:lang="en-US" id="label_ScheduleOfEntityWideRevenueByMajorCustomersByReportingSegmentsTable">Schedule of Revenue by Major Customers, by Reporting Segments [Table]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfEntityWideRevenueByMajorCustomersByReportingSegmentsTable" xlink:to="label_ScheduleOfEntityWideRevenueByMajorCustomersByReportingSegmentsTable" xlink:title="Label : ScheduleOfEntityWideRevenueByMajorCustomersByReportingSegmentsTable to label_ScheduleOfEntityWideRevenueByMajorCustomersByReportingSegmentsTable" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ConcentrationRiskByBenchmarkAxis" xlink:label="ConcentrationRiskByBenchmarkAxis" xlink:title="ConcentrationRiskByBenchmarkAxis" />
    <link:label xlink:type="resource" xlink:label="label_ConcentrationRiskByBenchmarkAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ConcentrationRiskByBenchmarkAxis" xml:lang="en-US" id="label_ConcentrationRiskByBenchmarkAxis">Concentration Risk Benchmark [Axis]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ConcentrationRiskByBenchmarkAxis" xlink:to="label_ConcentrationRiskByBenchmarkAxis" xlink:title="Label : ConcentrationRiskByBenchmarkAxis to label_ConcentrationRiskByBenchmarkAxis" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ConcentrationRiskBenchmarkDomain" xlink:label="ConcentrationRiskBenchmarkDomain" xlink:title="ConcentrationRiskBenchmarkDomain" />
    <link:label xlink:type="resource" xlink:label="label_ConcentrationRiskBenchmarkDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ConcentrationRiskBenchmarkDomain" xml:lang="en-US" id="label_ConcentrationRiskBenchmarkDomain">Concentration Risk Benchmark [Domain]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ConcentrationRiskBenchmarkDomain" xlink:to="label_ConcentrationRiskBenchmarkDomain" xlink:title="Label : ConcentrationRiskBenchmarkDomain to label_ConcentrationRiskBenchmarkDomain" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RevenueFromContractWithCustomerMember" xlink:label="RevenueFromContractWithCustomerMember" xlink:title="RevenueFromContractWithCustomerMember" />
    <link:label xlink:type="resource" xlink:label="label_RevenueFromContractWithCustomerMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_RevenueFromContractWithCustomerMember" xml:lang="en-US" id="label_RevenueFromContractWithCustomerMember">Total Revenue</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RevenueFromContractWithCustomerMember" xlink:to="label_RevenueFromContractWithCustomerMember" xlink:title="Label : RevenueFromContractWithCustomerMember to label_RevenueFromContractWithCustomerMember" />
    <link:label xlink:type="resource" xlink:label="label_RevenueFromContractWithCustomerMember_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_RevenueFromContractWithCustomerMember_1" xml:lang="en-US" id="label_RevenueFromContractWithCustomerMember_1">Revenue from Contract with Customer Benchmark [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RevenueFromContractWithCustomerMember" xlink:to="label_RevenueFromContractWithCustomerMember_1" xlink:title="Label : RevenueFromContractWithCustomerMember to label_RevenueFromContractWithCustomerMember_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ConcentrationRiskByTypeAxis" xlink:label="ConcentrationRiskByTypeAxis" xlink:title="ConcentrationRiskByTypeAxis" />
    <link:label xlink:type="resource" xlink:label="label_ConcentrationRiskByTypeAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ConcentrationRiskByTypeAxis" xml:lang="en-US" id="label_ConcentrationRiskByTypeAxis">Concentration Risk Type [Axis]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ConcentrationRiskByTypeAxis" xlink:to="label_ConcentrationRiskByTypeAxis" xlink:title="Label : ConcentrationRiskByTypeAxis to label_ConcentrationRiskByTypeAxis" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ConcentrationRiskTypeDomain" xlink:label="ConcentrationRiskTypeDomain" xlink:title="ConcentrationRiskTypeDomain" />
    <link:label xlink:type="resource" xlink:label="label_ConcentrationRiskTypeDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ConcentrationRiskTypeDomain" xml:lang="en-US" id="label_ConcentrationRiskTypeDomain">Concentration Risk Type [Domain]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ConcentrationRiskTypeDomain" xlink:to="label_ConcentrationRiskTypeDomain" xlink:title="Label : ConcentrationRiskTypeDomain to label_ConcentrationRiskTypeDomain" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CustomerConcentrationRiskMember" xlink:label="CustomerConcentrationRiskMember" xlink:title="CustomerConcentrationRiskMember" />
    <link:label xlink:type="resource" xlink:label="label_CustomerConcentrationRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CustomerConcentrationRiskMember" xml:lang="en-US" id="label_CustomerConcentrationRiskMember">Customer Concentration Risk [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CustomerConcentrationRiskMember" xlink:to="label_CustomerConcentrationRiskMember" xlink:title="Label : CustomerConcentrationRiskMember to label_CustomerConcentrationRiskMember" />
    <link:label xlink:type="resource" xlink:label="label_CustomerConcentrationRiskMember_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_CustomerConcentrationRiskMember_1" xml:lang="en-US" id="label_CustomerConcentrationRiskMember_1">Customer Concentration Risk</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CustomerConcentrationRiskMember" xlink:to="label_CustomerConcentrationRiskMember_1" xlink:title="Label : CustomerConcentrationRiskMember to label_CustomerConcentrationRiskMember_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_MajorCustomersAxis" xlink:label="MajorCustomersAxis" xlink:title="MajorCustomersAxis" />
    <link:label xlink:type="resource" xlink:label="label_MajorCustomersAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_MajorCustomersAxis" xml:lang="en-US" id="label_MajorCustomersAxis">Customer [Axis]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MajorCustomersAxis" xlink:to="label_MajorCustomersAxis" xlink:title="Label : MajorCustomersAxis to label_MajorCustomersAxis" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_NameOfMajorCustomerDomain" xlink:label="NameOfMajorCustomerDomain" xlink:title="NameOfMajorCustomerDomain" />
    <link:label xlink:type="resource" xlink:label="label_NameOfMajorCustomerDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_NameOfMajorCustomerDomain" xml:lang="en-US" id="label_NameOfMajorCustomerDomain">Customer [Domain]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NameOfMajorCustomerDomain" xlink:to="label_NameOfMajorCustomerDomain" xlink:title="Label : NameOfMajorCustomerDomain to label_NameOfMajorCustomerDomain" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_Customer1Member" xlink:label="Customer1Member" xlink:title="Customer1Member" />
    <link:label xlink:type="resource" xlink:label="label_Customer1Member" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_Customer1Member" xml:lang="en-US" id="label_Customer1Member">Customer, One</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="Customer1Member" xlink:to="label_Customer1Member" xlink:title="Label : Customer1Member to label_Customer1Member" />
    <link:label xlink:type="resource" xlink:label="label_Customer1Member_1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_Customer1Member_1" xml:lang="en-US" id="label_Customer1Member_1">This member stands for the information pertaining to "Customer, 1".</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="Customer1Member" xlink:to="label_Customer1Member_1" xlink:title="Label : Customer1Member to label_Customer1Member_1" />
    <link:label xlink:type="resource" xlink:label="label_Customer1Member_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_Customer1Member_2" xml:lang="en-US" id="label_Customer1Member_2">Customer, 1 [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="Customer1Member" xlink:to="label_Customer1Member_2" xlink:title="Label : Customer1Member to label_Customer1Member_2" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_Customer2Member" xlink:label="Customer2Member" xlink:title="Customer2Member" />
    <link:label xlink:type="resource" xlink:label="label_Customer2Member" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_Customer2Member" xml:lang="en-US" id="label_Customer2Member">This member stands for the information pertaining to "Customer, 2".</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="Customer2Member" xlink:to="label_Customer2Member" xlink:title="Label : Customer2Member to label_Customer2Member" />
    <link:label xlink:type="resource" xlink:label="label_Customer2Member_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_Customer2Member_1" xml:lang="en-US" id="label_Customer2Member_1">Customer, Two</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="Customer2Member" xlink:to="label_Customer2Member_1" xlink:title="Label : Customer2Member to label_Customer2Member_1" />
    <link:label xlink:type="resource" xlink:label="label_Customer2Member_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_Customer2Member_2" xml:lang="en-US" id="label_Customer2Member_2">Customer, 2 [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="Customer2Member" xlink:to="label_Customer2Member_2" xlink:title="Label : Customer2Member to label_Customer2Member_2" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_Customer3Member" xlink:label="Customer3Member" xlink:title="Customer3Member" />
    <link:label xlink:type="resource" xlink:label="label_Customer3Member" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_Customer3Member" xml:lang="en-US" id="label_Customer3Member">This member stands for the information pertaining to "Customer, 3".</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="Customer3Member" xlink:to="label_Customer3Member" xlink:title="Label : Customer3Member to label_Customer3Member" />
    <link:label xlink:type="resource" xlink:label="label_Customer3Member_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_Customer3Member_1" xml:lang="en-US" id="label_Customer3Member_1">Customer, Three</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="Customer3Member" xlink:to="label_Customer3Member_1" xlink:title="Label : Customer3Member to label_Customer3Member_1" />
    <link:label xlink:type="resource" xlink:label="label_Customer3Member_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_Customer3Member_2" xml:lang="en-US" id="label_Customer3Member_2">Customer, 3 [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="Customer3Member" xlink:to="label_Customer3Member_2" xlink:title="Label : Customer3Member to label_Customer3Member_2" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EntityWideRevenueMajorCustomerLineItems" xlink:label="EntityWideRevenueMajorCustomerLineItems" xlink:title="EntityWideRevenueMajorCustomerLineItems" />
    <link:label xlink:type="resource" xlink:label="label_EntityWideRevenueMajorCustomerLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_EntityWideRevenueMajorCustomerLineItems" xml:lang="en-US" id="label_EntityWideRevenueMajorCustomerLineItems">Revenue, Major Customer [Line Items]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EntityWideRevenueMajorCustomerLineItems" xlink:to="label_EntityWideRevenueMajorCustomerLineItems" xlink:title="Label : EntityWideRevenueMajorCustomerLineItems to label_EntityWideRevenueMajorCustomerLineItems" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NumberOfOperatingSegments" xlink:label="NumberOfOperatingSegments" xlink:title="NumberOfOperatingSegments" />
    <link:label xlink:type="resource" xlink:label="label_NumberOfOperatingSegments" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_NumberOfOperatingSegments" xml:lang="en-US" id="label_NumberOfOperatingSegments">Number of Operating Segments</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NumberOfOperatingSegments" xlink:to="label_NumberOfOperatingSegments" xlink:title="Label : NumberOfOperatingSegments to label_NumberOfOperatingSegments" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_NumberOfCustomers" xlink:label="NumberOfCustomers" xlink:title="NumberOfCustomers" />
    <link:label xlink:type="resource" xlink:label="label_NumberOfCustomers" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_NumberOfCustomers" xml:lang="en-US" id="label_NumberOfCustomers">Represents number of customers.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NumberOfCustomers" xlink:to="label_NumberOfCustomers" xlink:title="Label : NumberOfCustomers to label_NumberOfCustomers" />
    <link:label xlink:type="resource" xlink:label="label_NumberOfCustomers_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_NumberOfCustomers_1" xml:lang="en-US" id="label_NumberOfCustomers_1">Number of Customers</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NumberOfCustomers" xlink:to="label_NumberOfCustomers_1" xlink:title="Label : NumberOfCustomers to label_NumberOfCustomers_1" />
    <link:label xlink:type="resource" xlink:label="label_NumberOfCustomers_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_NumberOfCustomers_2" xml:lang="en-US" id="label_NumberOfCustomers_2">Number of customers</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NumberOfCustomers" xlink:to="label_NumberOfCustomers_2" xlink:title="Label : NumberOfCustomers to label_NumberOfCustomers_2" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SubsequentEventTable" xlink:label="SubsequentEventTable" xlink:title="SubsequentEventTable" />
    <link:label xlink:type="resource" xlink:label="label_SubsequentEventTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_SubsequentEventTable" xml:lang="en-US" id="label_SubsequentEventTable">Subsequent Event [Table]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SubsequentEventTable" xlink:to="label_SubsequentEventTable" xlink:title="Label : SubsequentEventTable to label_SubsequentEventTable" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentAxis" xlink:label="DebtInstrumentAxis" xlink:title="DebtInstrumentAxis" />
    <link:label xlink:type="resource" xlink:label="label_DebtInstrumentAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DebtInstrumentAxis" xml:lang="en-US" id="label_DebtInstrumentAxis">Debt Instrument [Axis]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtInstrumentAxis" xlink:to="label_DebtInstrumentAxis" xlink:title="Label : DebtInstrumentAxis to label_DebtInstrumentAxis" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="DebtInstrumentNameDomain" xlink:title="DebtInstrumentNameDomain" />
    <link:label xlink:type="resource" xlink:label="label_DebtInstrumentNameDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DebtInstrumentNameDomain" xml:lang="en-US" id="label_DebtInstrumentNameDomain">Debt Instrument, Name [Domain]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtInstrumentNameDomain" xlink:to="label_DebtInstrumentNameDomain" xlink:title="Label : DebtInstrumentNameDomain to label_DebtInstrumentNameDomain" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SubsequentEventLineItems" xlink:label="SubsequentEventLineItems" xlink:title="SubsequentEventLineItems" />
    <link:label xlink:type="resource" xlink:label="label_SubsequentEventLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_SubsequentEventLineItems" xml:lang="en-US" id="label_SubsequentEventLineItems">Subsequent Event [Line Items]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SubsequentEventLineItems" xlink:to="label_SubsequentEventLineItems" xlink:title="Label : SubsequentEventLineItems to label_SubsequentEventLineItems" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProceedsFromIssuanceOfDebt" xlink:label="ProceedsFromIssuanceOfDebt" xlink:title="ProceedsFromIssuanceOfDebt" />
    <link:label xlink:type="resource" xlink:label="label_ProceedsFromIssuanceOfDebt" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="label_ProceedsFromIssuanceOfDebt" xml:lang="en-US" id="label_ProceedsFromIssuanceOfDebt">Proceeds from issuance of debt</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ProceedsFromIssuanceOfDebt" xlink:to="label_ProceedsFromIssuanceOfDebt" xlink:title="Label : ProceedsFromIssuanceOfDebt to label_ProceedsFromIssuanceOfDebt" />
    <link:label xlink:type="resource" xlink:label="label_ProceedsFromIssuanceOfDebt_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ProceedsFromIssuanceOfDebt_1" xml:lang="en-US" id="label_ProceedsFromIssuanceOfDebt_1">Proceeds from Issuance of Debt</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ProceedsFromIssuanceOfDebt" xlink:to="label_ProceedsFromIssuanceOfDebt_1" xlink:title="Label : ProceedsFromIssuanceOfDebt to label_ProceedsFromIssuanceOfDebt_1" />
    <link:label xlink:type="resource" xlink:label="label_ProceedsFromIssuanceOfDebt_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ProceedsFromIssuanceOfDebt_2" xml:lang="en-US" id="label_ProceedsFromIssuanceOfDebt_2">Gross proceeds</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ProceedsFromIssuanceOfDebt" xlink:to="label_ProceedsFromIssuanceOfDebt_2" xlink:title="Label : ProceedsFromIssuanceOfDebt to label_ProceedsFromIssuanceOfDebt_2" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentDateOfFirstRequiredPayment1" xlink:label="DebtInstrumentDateOfFirstRequiredPayment1" xlink:title="DebtInstrumentDateOfFirstRequiredPayment1" />
    <link:label xlink:type="resource" xlink:label="label_DebtInstrumentDateOfFirstRequiredPayment1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_DebtInstrumentDateOfFirstRequiredPayment1" xml:lang="en-US" id="label_DebtInstrumentDateOfFirstRequiredPayment1">Debt Instrument, Date of First Required Payment</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtInstrumentDateOfFirstRequiredPayment1" xlink:to="label_DebtInstrumentDateOfFirstRequiredPayment1" xlink:title="Label : DebtInstrumentDateOfFirstRequiredPayment1 to label_DebtInstrumentDateOfFirstRequiredPayment1" />
    <link:label xlink:type="resource" xlink:label="label_DebtInstrumentDateOfFirstRequiredPayment1_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DebtInstrumentDateOfFirstRequiredPayment1_1" xml:lang="en-US" id="label_DebtInstrumentDateOfFirstRequiredPayment1_1">Debt Instrument, Date of First Required Payment</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtInstrumentDateOfFirstRequiredPayment1" xlink:to="label_DebtInstrumentDateOfFirstRequiredPayment1_1" xlink:title="Label : DebtInstrumentDateOfFirstRequiredPayment1 to label_DebtInstrumentDateOfFirstRequiredPayment1_1" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_PeriodOfIssuanceFromDateOfInitialClosing" xlink:label="PeriodOfIssuanceFromDateOfInitialClosing" xlink:title="PeriodOfIssuanceFromDateOfInitialClosing" />
    <link:label xlink:type="resource" xlink:label="label_PeriodOfIssuanceFromDateOfInitialClosing" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_PeriodOfIssuanceFromDateOfInitialClosing" xml:lang="en-US" id="label_PeriodOfIssuanceFromDateOfInitialClosing">The period of issuance from the date of initial closing of debt issued.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PeriodOfIssuanceFromDateOfInitialClosing" xlink:to="label_PeriodOfIssuanceFromDateOfInitialClosing" xlink:title="Label : PeriodOfIssuanceFromDateOfInitialClosing to label_PeriodOfIssuanceFromDateOfInitialClosing" />
    <link:label xlink:type="resource" xlink:label="label_PeriodOfIssuanceFromDateOfInitialClosing_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_PeriodOfIssuanceFromDateOfInitialClosing_1" xml:lang="en-US" id="label_PeriodOfIssuanceFromDateOfInitialClosing_1">Period of issuance from date of initial closing</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PeriodOfIssuanceFromDateOfInitialClosing" xlink:to="label_PeriodOfIssuanceFromDateOfInitialClosing_1" xlink:title="Label : PeriodOfIssuanceFromDateOfInitialClosing to label_PeriodOfIssuanceFromDateOfInitialClosing_1" />
    <link:label xlink:type="resource" xlink:label="label_PeriodOfIssuanceFromDateOfInitialClosing_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_PeriodOfIssuanceFromDateOfInitialClosing_2" xml:lang="en-US" id="label_PeriodOfIssuanceFromDateOfInitialClosing_2">Period of issuance from date of initial closing</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PeriodOfIssuanceFromDateOfInitialClosing" xlink:to="label_PeriodOfIssuanceFromDateOfInitialClosing_2" xlink:title="Label : PeriodOfIssuanceFromDateOfInitialClosing to label_PeriodOfIssuanceFromDateOfInitialClosing_2" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_MultiplyingFactorForDeterminationOfAggregateNumberOfSharesOfCommonStockToBeIssuableUponExerciseOfWarrants" xlink:label="MultiplyingFactorForDeterminationOfAggregateNumberOfSharesOfCommonStockToBeIssuableUponExerciseOfWarrants" xlink:title="MultiplyingFactorForDeterminationOfAggregateNumberOfSharesOfCommonStockToBeIssuableUponExerciseOfWarrants" />
    <link:label xlink:type="resource" xlink:label="label_MultiplyingFactorForDeterminationOfAggregateNumberOfSharesOfCommonStockToBeIssuableUponExerciseOfWarrants" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_MultiplyingFactorForDeterminationOfAggregateNumberOfSharesOfCommonStockToBeIssuableUponExerciseOfWarrants" xml:lang="en-US" id="label_MultiplyingFactorForDeterminationOfAggregateNumberOfSharesOfCommonStockToBeIssuableUponExerciseOfWarrants">The multiplying factor for the determination of the aggregate number of shares of common stock to be issuable upon exercise of warrants issued.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MultiplyingFactorForDeterminationOfAggregateNumberOfSharesOfCommonStockToBeIssuableUponExerciseOfWarrants" xlink:to="label_MultiplyingFactorForDeterminationOfAggregateNumberOfSharesOfCommonStockToBeIssuableUponExerciseOfWarrants" xlink:title="Label : MultiplyingFactorForDeterminationOfAggregateNumberOfSharesOfCommonStockToBeIssuableUponExerciseOfWarrants to label_MultiplyingFactorForDeterminationOfAggregateNumberOfSharesOfCommonStockToBeIssuableUponExerciseOfWarrants" />
    <link:label xlink:type="resource" xlink:label="label_MultiplyingFactorForDeterminationOfAggregateNumberOfSharesOfCommonStockToBeIssuableUponExerciseOfWarrants_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_MultiplyingFactorForDeterminationOfAggregateNumberOfSharesOfCommonStockToBeIssuableUponExerciseOfWarrants_1" xml:lang="en-US" id="label_MultiplyingFactorForDeterminationOfAggregateNumberOfSharesOfCommonStockToBeIssuableUponExerciseOfWarrants_1">Multiplying factor for the determination of the aggregate number of shares of common stock to be issuable upon exercise of warrants</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MultiplyingFactorForDeterminationOfAggregateNumberOfSharesOfCommonStockToBeIssuableUponExerciseOfWarrants" xlink:to="label_MultiplyingFactorForDeterminationOfAggregateNumberOfSharesOfCommonStockToBeIssuableUponExerciseOfWarrants_1" xlink:title="Label : MultiplyingFactorForDeterminationOfAggregateNumberOfSharesOfCommonStockToBeIssuableUponExerciseOfWarrants to label_MultiplyingFactorForDeterminationOfAggregateNumberOfSharesOfCommonStockToBeIssuableUponExerciseOfWarrants_1" />
    <link:label xlink:type="resource" xlink:label="label_MultiplyingFactorForDeterminationOfAggregateNumberOfSharesOfCommonStockToBeIssuableUponExerciseOfWarrants_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_MultiplyingFactorForDeterminationOfAggregateNumberOfSharesOfCommonStockToBeIssuableUponExerciseOfWarrants_2" xml:lang="en-US" id="label_MultiplyingFactorForDeterminationOfAggregateNumberOfSharesOfCommonStockToBeIssuableUponExerciseOfWarrants_2">Multiplying factor for determination of aggregate number of shares of common stock to be issuable upon exercise of warrants</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MultiplyingFactorForDeterminationOfAggregateNumberOfSharesOfCommonStockToBeIssuableUponExerciseOfWarrants" xlink:to="label_MultiplyingFactorForDeterminationOfAggregateNumberOfSharesOfCommonStockToBeIssuableUponExerciseOfWarrants_2" xlink:title="Label : MultiplyingFactorForDeterminationOfAggregateNumberOfSharesOfCommonStockToBeIssuableUponExerciseOfWarrants to label_MultiplyingFactorForDeterminationOfAggregateNumberOfSharesOfCommonStockToBeIssuableUponExerciseOfWarrants_2" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_ThresholdPeriodFromDateOfInitialClosingForExerciseOfWarrants" xlink:label="ThresholdPeriodFromDateOfInitialClosingForExerciseOfWarrants" xlink:title="ThresholdPeriodFromDateOfInitialClosingForExerciseOfWarrants" />
    <link:label xlink:type="resource" xlink:label="label_ThresholdPeriodFromDateOfInitialClosingForExerciseOfWarrants" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_ThresholdPeriodFromDateOfInitialClosingForExerciseOfWarrants" xml:lang="en-US" id="label_ThresholdPeriodFromDateOfInitialClosingForExerciseOfWarrants">Threshold period of specified number of days, months from the date of initial closing of debt issued for exercise of warrants issued.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ThresholdPeriodFromDateOfInitialClosingForExerciseOfWarrants" xlink:to="label_ThresholdPeriodFromDateOfInitialClosingForExerciseOfWarrants" xlink:title="Label : ThresholdPeriodFromDateOfInitialClosingForExerciseOfWarrants to label_ThresholdPeriodFromDateOfInitialClosingForExerciseOfWarrants" />
    <link:label xlink:type="resource" xlink:label="label_ThresholdPeriodFromDateOfInitialClosingForExerciseOfWarrants_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ThresholdPeriodFromDateOfInitialClosingForExerciseOfWarrants_1" xml:lang="en-US" id="label_ThresholdPeriodFromDateOfInitialClosingForExerciseOfWarrants_1">Threshold period from date of initial closing for exercise of warrants</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ThresholdPeriodFromDateOfInitialClosingForExerciseOfWarrants" xlink:to="label_ThresholdPeriodFromDateOfInitialClosingForExerciseOfWarrants_1" xlink:title="Label : ThresholdPeriodFromDateOfInitialClosingForExerciseOfWarrants to label_ThresholdPeriodFromDateOfInitialClosingForExerciseOfWarrants_1" />
    <link:label xlink:type="resource" xlink:label="label_ThresholdPeriodFromDateOfInitialClosingForExerciseOfWarrants_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ThresholdPeriodFromDateOfInitialClosingForExerciseOfWarrants_2" xml:lang="en-US" id="label_ThresholdPeriodFromDateOfInitialClosingForExerciseOfWarrants_2">Threshold period from date of initial closing for exercise of warrants</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ThresholdPeriodFromDateOfInitialClosingForExerciseOfWarrants" xlink:to="label_ThresholdPeriodFromDateOfInitialClosingForExerciseOfWarrants_2" xlink:title="Label : ThresholdPeriodFromDateOfInitialClosingForExerciseOfWarrants to label_ThresholdPeriodFromDateOfInitialClosingForExerciseOfWarrants_2" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LeasesAbstract" xlink:label="LeasesAbstract" xlink:title="LeasesAbstract" />
    <link:label xlink:type="resource" xlink:label="label_LeasesAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_LeasesAbstract" xml:lang="en-US" id="label_LeasesAbstract">Leases [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LeasesAbstract" xlink:to="label_LeasesAbstract" xlink:title="Label : LeasesAbstract to label_LeasesAbstract" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingLeaseLiabilitiesPaymentsDueAbstract" xlink:label="OperatingLeaseLiabilitiesPaymentsDueAbstract" xlink:title="OperatingLeaseLiabilitiesPaymentsDueAbstract" />
    <link:label xlink:type="resource" xlink:label="label_OperatingLeaseLiabilitiesPaymentsDueAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_OperatingLeaseLiabilitiesPaymentsDueAbstract" xml:lang="en-US" id="label_OperatingLeaseLiabilitiesPaymentsDueAbstract">Future lease payments under operating leases</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OperatingLeaseLiabilitiesPaymentsDueAbstract" xlink:to="label_OperatingLeaseLiabilitiesPaymentsDueAbstract" xlink:title="Label : OperatingLeaseLiabilitiesPaymentsDueAbstract to label_OperatingLeaseLiabilitiesPaymentsDueAbstract" />
    <link:label xlink:type="resource" xlink:label="label_OperatingLeaseLiabilitiesPaymentsDueAbstract_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_OperatingLeaseLiabilitiesPaymentsDueAbstract_1" xml:lang="en-US" id="label_OperatingLeaseLiabilitiesPaymentsDueAbstract_1">Lessee, Operating Lease, Liability, to be Paid [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OperatingLeaseLiabilitiesPaymentsDueAbstract" xlink:to="label_OperatingLeaseLiabilitiesPaymentsDueAbstract_1" xlink:title="Label : OperatingLeaseLiabilitiesPaymentsDueAbstract to label_OperatingLeaseLiabilitiesPaymentsDueAbstract_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear" xlink:label="LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear" xlink:title="LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear" />
    <link:label xlink:type="resource" xlink:label="label_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear" xml:lang="en-US" id="label_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear">Lessee, Operating Lease, Liability, to be Paid, Remainder of Fiscal Year</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear" xlink:to="label_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear" xlink:title="Label : LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear to label_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear" />
    <link:label xlink:type="resource" xlink:label="label_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear_1" xml:lang="en-US" id="label_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear_1">Remainder of 2022</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear" xlink:to="label_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear_1" xlink:title="Label : LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear to label_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths" xlink:label="LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths" xlink:title="LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths" />
    <link:label xlink:type="resource" xlink:label="label_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths" xml:lang="en-US" id="label_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths">Lessee, Operating Lease, Liability, to be Paid, Year One</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths" xlink:to="label_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths" xlink:title="Label : LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths to label_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths" />
    <link:label xlink:type="resource" xlink:label="label_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths_1" xml:lang="en-US" id="label_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths_1">2023</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths" xlink:to="label_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths_1" xlink:title="Label : LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths to label_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo" xlink:label="LesseeOperatingLeaseLiabilityPaymentsDueYearTwo" xlink:title="LesseeOperatingLeaseLiabilityPaymentsDueYearTwo" />
    <link:label xlink:type="resource" xlink:label="label_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo" xml:lang="en-US" id="label_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo">2024</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LesseeOperatingLeaseLiabilityPaymentsDueYearTwo" xlink:to="label_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo" xlink:title="Label : LesseeOperatingLeaseLiabilityPaymentsDueYearTwo to label_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo" />
    <link:label xlink:type="resource" xlink:label="label_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_1" xml:lang="en-US" id="label_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_1">Lessee, Operating Lease, Liability, to be Paid, Year Two</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LesseeOperatingLeaseLiabilityPaymentsDueYearTwo" xlink:to="label_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_1" xlink:title="Label : LesseeOperatingLeaseLiabilityPaymentsDueYearTwo to label_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree" xlink:label="LesseeOperatingLeaseLiabilityPaymentsDueYearThree" xlink:title="LesseeOperatingLeaseLiabilityPaymentsDueYearThree" />
    <link:label xlink:type="resource" xlink:label="label_LesseeOperatingLeaseLiabilityPaymentsDueYearThree" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_LesseeOperatingLeaseLiabilityPaymentsDueYearThree" xml:lang="en-US" id="label_LesseeOperatingLeaseLiabilityPaymentsDueYearThree">2025</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LesseeOperatingLeaseLiabilityPaymentsDueYearThree" xlink:to="label_LesseeOperatingLeaseLiabilityPaymentsDueYearThree" xlink:title="Label : LesseeOperatingLeaseLiabilityPaymentsDueYearThree to label_LesseeOperatingLeaseLiabilityPaymentsDueYearThree" />
    <link:label xlink:type="resource" xlink:label="label_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_1" xml:lang="en-US" id="label_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_1">Lessee, Operating Lease, Liability, to be Paid, Year Three</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LesseeOperatingLeaseLiabilityPaymentsDueYearThree" xlink:to="label_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_1" xlink:title="Label : LesseeOperatingLeaseLiabilityPaymentsDueYearThree to label_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour" xlink:label="LesseeOperatingLeaseLiabilityPaymentsDueYearFour" xlink:title="LesseeOperatingLeaseLiabilityPaymentsDueYearFour" />
    <link:label xlink:type="resource" xlink:label="label_LesseeOperatingLeaseLiabilityPaymentsDueYearFour" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_LesseeOperatingLeaseLiabilityPaymentsDueYearFour" xml:lang="en-US" id="label_LesseeOperatingLeaseLiabilityPaymentsDueYearFour">2026</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LesseeOperatingLeaseLiabilityPaymentsDueYearFour" xlink:to="label_LesseeOperatingLeaseLiabilityPaymentsDueYearFour" xlink:title="Label : LesseeOperatingLeaseLiabilityPaymentsDueYearFour to label_LesseeOperatingLeaseLiabilityPaymentsDueYearFour" />
    <link:label xlink:type="resource" xlink:label="label_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_1" xml:lang="en-US" id="label_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_1">Lessee, Operating Lease, Liability, to be Paid, Year Four</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LesseeOperatingLeaseLiabilityPaymentsDueYearFour" xlink:to="label_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_1" xlink:title="Label : LesseeOperatingLeaseLiabilityPaymentsDueYearFour to label_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive" xlink:label="LesseeOperatingLeaseLiabilityPaymentsDueYearFive" xlink:title="LesseeOperatingLeaseLiabilityPaymentsDueYearFive" />
    <link:label xlink:type="resource" xlink:label="label_LesseeOperatingLeaseLiabilityPaymentsDueYearFive" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_LesseeOperatingLeaseLiabilityPaymentsDueYearFive" xml:lang="en-US" id="label_LesseeOperatingLeaseLiabilityPaymentsDueYearFive">Thereafter</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LesseeOperatingLeaseLiabilityPaymentsDueYearFive" xlink:to="label_LesseeOperatingLeaseLiabilityPaymentsDueYearFive" xlink:title="Label : LesseeOperatingLeaseLiabilityPaymentsDueYearFive to label_LesseeOperatingLeaseLiabilityPaymentsDueYearFive" />
    <link:label xlink:type="resource" xlink:label="label_LesseeOperatingLeaseLiabilityPaymentsDueYearFive_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_LesseeOperatingLeaseLiabilityPaymentsDueYearFive_1" xml:lang="en-US" id="label_LesseeOperatingLeaseLiabilityPaymentsDueYearFive_1">Lessee, Operating Lease, Liability, to be Paid, Year Five</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LesseeOperatingLeaseLiabilityPaymentsDueYearFive" xlink:to="label_LesseeOperatingLeaseLiabilityPaymentsDueYearFive_1" xlink:title="Label : LesseeOperatingLeaseLiabilityPaymentsDueYearFive to label_LesseeOperatingLeaseLiabilityPaymentsDueYearFive_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue" xlink:label="LesseeOperatingLeaseLiabilityPaymentsDue" xlink:title="LesseeOperatingLeaseLiabilityPaymentsDue" />
    <link:label xlink:type="resource" xlink:label="label_LesseeOperatingLeaseLiabilityPaymentsDue" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_LesseeOperatingLeaseLiabilityPaymentsDue" xml:lang="en-US" id="label_LesseeOperatingLeaseLiabilityPaymentsDue">Lessee, Operating Lease, Liability, to be Paid</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LesseeOperatingLeaseLiabilityPaymentsDue" xlink:to="label_LesseeOperatingLeaseLiabilityPaymentsDue" xlink:title="Label : LesseeOperatingLeaseLiabilityPaymentsDue to label_LesseeOperatingLeaseLiabilityPaymentsDue" />
    <link:label xlink:type="resource" xlink:label="label_LesseeOperatingLeaseLiabilityPaymentsDue_1" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="label_LesseeOperatingLeaseLiabilityPaymentsDue_1" xml:lang="en-US" id="label_LesseeOperatingLeaseLiabilityPaymentsDue_1">Total undiscounted future lease payments</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LesseeOperatingLeaseLiabilityPaymentsDue" xlink:to="label_LesseeOperatingLeaseLiabilityPaymentsDue_1" xlink:title="Label : LesseeOperatingLeaseLiabilityPaymentsDue to label_LesseeOperatingLeaseLiabilityPaymentsDue_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount" xlink:label="LesseeOperatingLeaseLiabilityUndiscountedExcessAmount" xlink:title="LesseeOperatingLeaseLiabilityUndiscountedExcessAmount" />
    <link:label xlink:type="resource" xlink:label="label_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount" xml:lang="en-US" id="label_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount">Lessee, Operating Lease, Liability, Undiscounted Excess Amount</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LesseeOperatingLeaseLiabilityUndiscountedExcessAmount" xlink:to="label_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount" xlink:title="Label : LesseeOperatingLeaseLiabilityUndiscountedExcessAmount to label_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount" />
    <link:label xlink:type="resource" xlink:label="label_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_1" xml:lang="en-US" id="label_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_1">Less imputed interest</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LesseeOperatingLeaseLiabilityUndiscountedExcessAmount" xlink:to="label_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_1" xlink:title="Label : LesseeOperatingLeaseLiabilityUndiscountedExcessAmount to label_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingLeaseLiability" xlink:label="OperatingLeaseLiability" xlink:title="OperatingLeaseLiability" />
    <link:label xlink:type="resource" xlink:label="label_OperatingLeaseLiability" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_OperatingLeaseLiability" xml:lang="en-US" id="label_OperatingLeaseLiability">Total lease liability balance</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OperatingLeaseLiability" xlink:to="label_OperatingLeaseLiability" xlink:title="Label : OperatingLeaseLiability to label_OperatingLeaseLiability" />
    <link:label xlink:type="resource" xlink:label="label_OperatingLeaseLiability_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_OperatingLeaseLiability_1" xml:lang="en-US" id="label_OperatingLeaseLiability_1">Operating Lease, Liability</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OperatingLeaseLiability" xlink:to="label_OperatingLeaseLiability_1" xlink:title="Label : OperatingLeaseLiability to label_OperatingLeaseLiability_1" />
    <link:label xlink:type="resource" xlink:label="label_OperatingLeaseLiability_2" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="label_OperatingLeaseLiability_2" xml:lang="en-US" id="label_OperatingLeaseLiability_2">Total lease liability balance</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OperatingLeaseLiability" xlink:to="label_OperatingLeaseLiability_2" xlink:title="Label : OperatingLeaseLiability to label_OperatingLeaseLiability_2" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingLeaseCost" xlink:label="OperatingLeaseCost" xlink:title="OperatingLeaseCost" />
    <link:label xlink:type="resource" xlink:label="label_OperatingLeaseCost" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_OperatingLeaseCost" xml:lang="en-US" id="label_OperatingLeaseCost">Operating Lease, Cost</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OperatingLeaseCost" xlink:to="label_OperatingLeaseCost" xlink:title="Label : OperatingLeaseCost to label_OperatingLeaseCost" />
    <link:label xlink:type="resource" xlink:label="label_OperatingLeaseCost_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_OperatingLeaseCost_1" xml:lang="en-US" id="label_OperatingLeaseCost_1">Operating lease cost</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OperatingLeaseCost" xlink:to="label_OperatingLeaseCost_1" xlink:title="Label : OperatingLeaseCost to label_OperatingLeaseCost_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_VariableLeaseCost" xlink:label="VariableLeaseCost" xlink:title="VariableLeaseCost" />
    <link:label xlink:type="resource" xlink:label="label_VariableLeaseCost" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_VariableLeaseCost" xml:lang="en-US" id="label_VariableLeaseCost">Variable Lease, Cost</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="VariableLeaseCost" xlink:to="label_VariableLeaseCost" xlink:title="Label : VariableLeaseCost to label_VariableLeaseCost" />
    <link:label xlink:type="resource" xlink:label="label_VariableLeaseCost_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_VariableLeaseCost_1" xml:lang="en-US" id="label_VariableLeaseCost_1">Variable lease cost</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="VariableLeaseCost" xlink:to="label_VariableLeaseCost_1" xlink:title="Label : VariableLeaseCost to label_VariableLeaseCost_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShortTermLeaseCost" xlink:label="ShortTermLeaseCost" xlink:title="ShortTermLeaseCost" />
    <link:label xlink:type="resource" xlink:label="label_ShortTermLeaseCost" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ShortTermLeaseCost" xml:lang="en-US" id="label_ShortTermLeaseCost">Short-term Lease, Cost</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ShortTermLeaseCost" xlink:to="label_ShortTermLeaseCost" xlink:title="Label : ShortTermLeaseCost to label_ShortTermLeaseCost" />
    <link:label xlink:type="resource" xlink:label="label_ShortTermLeaseCost_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ShortTermLeaseCost_1" xml:lang="en-US" id="label_ShortTermLeaseCost_1">Short-term lease cost</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ShortTermLeaseCost" xlink:to="label_ShortTermLeaseCost_1" xlink:title="Label : ShortTermLeaseCost to label_ShortTermLeaseCost_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingLeasePayments" xlink:label="OperatingLeasePayments" xlink:title="OperatingLeasePayments" />
    <link:label xlink:type="resource" xlink:label="label_OperatingLeasePayments" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_OperatingLeasePayments" xml:lang="en-US" id="label_OperatingLeasePayments">Operating Lease, Payments</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OperatingLeasePayments" xlink:to="label_OperatingLeasePayments" xlink:title="Label : OperatingLeasePayments to label_OperatingLeasePayments" />
    <link:label xlink:type="resource" xlink:label="label_OperatingLeasePayments_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_OperatingLeasePayments_1" xml:lang="en-US" id="label_OperatingLeasePayments_1">Operating cash flows from operating leases</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OperatingLeasePayments" xlink:to="label_OperatingLeasePayments_1" xlink:title="Label : OperatingLeasePayments to label_OperatingLeasePayments_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability" xlink:label="RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability" xlink:title="RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability" />
    <link:label xlink:type="resource" xlink:label="label_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability" xml:lang="en-US" id="label_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability">Right-of-Use Asset Obtained in Exchange for Operating Lease Liability</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability" xlink:to="label_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability" xlink:title="Label : RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability to label_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability" />
    <link:label xlink:type="resource" xlink:label="label_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability_1" xml:lang="en-US" id="label_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability_1">Right-of-use assets obtained in exchange for new operating lease liabilities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability" xlink:to="label_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability_1" xlink:title="Label : RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability to label_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDue" xlink:label="OperatingLeasesFutureMinimumPaymentsDue" xlink:title="OperatingLeasesFutureMinimumPaymentsDue" />
    <link:label xlink:type="resource" xlink:label="label_OperatingLeasesFutureMinimumPaymentsDue" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_OperatingLeasesFutureMinimumPaymentsDue" xml:lang="en-US" id="label_OperatingLeasesFutureMinimumPaymentsDue">Operating Leases, Future Minimum Payments Due</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OperatingLeasesFutureMinimumPaymentsDue" xlink:to="label_OperatingLeasesFutureMinimumPaymentsDue" xlink:title="Label : OperatingLeasesFutureMinimumPaymentsDue to label_OperatingLeasesFutureMinimumPaymentsDue" />
    <link:label xlink:type="resource" xlink:label="label_OperatingLeasesFutureMinimumPaymentsDue_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_OperatingLeasesFutureMinimumPaymentsDue_1" xml:lang="en-US" id="label_OperatingLeasesFutureMinimumPaymentsDue_1">Future lease payments</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OperatingLeasesFutureMinimumPaymentsDue" xlink:to="label_OperatingLeasesFutureMinimumPaymentsDue_1" xlink:title="Label : OperatingLeasesFutureMinimumPaymentsDue to label_OperatingLeasesFutureMinimumPaymentsDue_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LesseeOperatingLeaseRenewalTerm" xlink:label="LesseeOperatingLeaseRenewalTerm" xlink:title="LesseeOperatingLeaseRenewalTerm" />
    <link:label xlink:type="resource" xlink:label="label_LesseeOperatingLeaseRenewalTerm" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_LesseeOperatingLeaseRenewalTerm" xml:lang="en-US" id="label_LesseeOperatingLeaseRenewalTerm">Lessee, Operating Lease, Renewal Term</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LesseeOperatingLeaseRenewalTerm" xlink:to="label_LesseeOperatingLeaseRenewalTerm" xlink:title="Label : LesseeOperatingLeaseRenewalTerm to label_LesseeOperatingLeaseRenewalTerm" />
    <link:label xlink:type="resource" xlink:label="label_LesseeOperatingLeaseRenewalTerm_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_LesseeOperatingLeaseRenewalTerm_1" xml:lang="en-US" id="label_LesseeOperatingLeaseRenewalTerm_1">Non cancelable lease terms</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LesseeOperatingLeaseRenewalTerm" xlink:to="label_LesseeOperatingLeaseRenewalTerm_1" xlink:title="Label : LesseeOperatingLeaseRenewalTerm to label_LesseeOperatingLeaseRenewalTerm_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LeaseAndRentalExpense" xlink:label="LeaseAndRentalExpense" xlink:title="LeaseAndRentalExpense" />
    <link:label xlink:type="resource" xlink:label="label_LeaseAndRentalExpense" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_LeaseAndRentalExpense" xml:lang="en-US" id="label_LeaseAndRentalExpense">Operating Leases, Rent Expense</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LeaseAndRentalExpense" xlink:to="label_LeaseAndRentalExpense" xlink:title="Label : LeaseAndRentalExpense to label_LeaseAndRentalExpense" />
    <link:label xlink:type="resource" xlink:label="label_LeaseAndRentalExpense_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_LeaseAndRentalExpense_1" xml:lang="en-US" id="label_LeaseAndRentalExpense_1">Operating lease rent expense</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LeaseAndRentalExpense" xlink:to="label_LeaseAndRentalExpense_1" xlink:title="Label : LeaseAndRentalExpense to label_LeaseAndRentalExpense_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1" xlink:label="OperatingLeaseWeightedAverageRemainingLeaseTerm1" xlink:title="OperatingLeaseWeightedAverageRemainingLeaseTerm1" />
    <link:label xlink:type="resource" xlink:label="label_OperatingLeaseWeightedAverageRemainingLeaseTerm1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_OperatingLeaseWeightedAverageRemainingLeaseTerm1" xml:lang="en-US" id="label_OperatingLeaseWeightedAverageRemainingLeaseTerm1">Operating Lease, Weighted Average Remaining Lease Term</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OperatingLeaseWeightedAverageRemainingLeaseTerm1" xlink:to="label_OperatingLeaseWeightedAverageRemainingLeaseTerm1" xlink:title="Label : OperatingLeaseWeightedAverageRemainingLeaseTerm1 to label_OperatingLeaseWeightedAverageRemainingLeaseTerm1" />
    <link:label xlink:type="resource" xlink:label="label_OperatingLeaseWeightedAverageRemainingLeaseTerm1_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_OperatingLeaseWeightedAverageRemainingLeaseTerm1_1" xml:lang="en-US" id="label_OperatingLeaseWeightedAverageRemainingLeaseTerm1_1">Weighted-average remaining lease term - operating leases (years)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OperatingLeaseWeightedAverageRemainingLeaseTerm1" xlink:to="label_OperatingLeaseWeightedAverageRemainingLeaseTerm1_1" xlink:title="Label : OperatingLeaseWeightedAverageRemainingLeaseTerm1 to label_OperatingLeaseWeightedAverageRemainingLeaseTerm1_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent" xlink:label="OperatingLeaseWeightedAverageDiscountRatePercent" xlink:title="OperatingLeaseWeightedAverageDiscountRatePercent" />
    <link:label xlink:type="resource" xlink:label="label_OperatingLeaseWeightedAverageDiscountRatePercent" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_OperatingLeaseWeightedAverageDiscountRatePercent" xml:lang="en-US" id="label_OperatingLeaseWeightedAverageDiscountRatePercent">Operating Lease, Weighted Average Discount Rate, Percent</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OperatingLeaseWeightedAverageDiscountRatePercent" xlink:to="label_OperatingLeaseWeightedAverageDiscountRatePercent" xlink:title="Label : OperatingLeaseWeightedAverageDiscountRatePercent to label_OperatingLeaseWeightedAverageDiscountRatePercent" />
    <link:label xlink:type="resource" xlink:label="label_OperatingLeaseWeightedAverageDiscountRatePercent_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_OperatingLeaseWeightedAverageDiscountRatePercent_1" xml:lang="en-US" id="label_OperatingLeaseWeightedAverageDiscountRatePercent_1">Weighted-average discount rate - operating leases (%)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OperatingLeaseWeightedAverageDiscountRatePercent" xlink:to="label_OperatingLeaseWeightedAverageDiscountRatePercent_1" xlink:title="Label : OperatingLeaseWeightedAverageDiscountRatePercent to label_OperatingLeaseWeightedAverageDiscountRatePercent_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessAcquisitionAxis" xlink:label="BusinessAcquisitionAxis" xlink:title="BusinessAcquisitionAxis" />
    <link:label xlink:type="resource" xlink:label="label_BusinessAcquisitionAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_BusinessAcquisitionAxis" xml:lang="en-US" id="label_BusinessAcquisitionAxis">Business Acquisition [Axis]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="BusinessAcquisitionAxis" xlink:to="label_BusinessAcquisitionAxis" xlink:title="Label : BusinessAcquisitionAxis to label_BusinessAcquisitionAxis" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessAcquisitionAcquireeDomain" xlink:label="BusinessAcquisitionAcquireeDomain" xlink:title="BusinessAcquisitionAcquireeDomain" />
    <link:label xlink:type="resource" xlink:label="label_BusinessAcquisitionAcquireeDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_BusinessAcquisitionAcquireeDomain" xml:lang="en-US" id="label_BusinessAcquisitionAcquireeDomain">Business Acquisition, Acquiree [Domain]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="BusinessAcquisitionAcquireeDomain" xlink:to="label_BusinessAcquisitionAcquireeDomain" xlink:title="Label : BusinessAcquisitionAcquireeDomain to label_BusinessAcquisitionAcquireeDomain" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_NestwaveSasMember" xlink:label="NestwaveSasMember" xlink:title="NestwaveSasMember" />
    <link:label xlink:type="resource" xlink:label="label_NestwaveSasMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_NestwaveSasMember" xml:lang="en-US" id="label_NestwaveSasMember">Nestwave [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NestwaveSasMember" xlink:to="label_NestwaveSasMember" xlink:title="Label : NestwaveSasMember to label_NestwaveSasMember" />
    <link:label xlink:type="resource" xlink:label="label_NestwaveSasMember_1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_NestwaveSasMember_1" xml:lang="en-US" id="label_NestwaveSasMember_1">This member stands for the information pertaining to Nestwave, SAS.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NestwaveSasMember" xlink:to="label_NestwaveSasMember_1" xlink:title="Label : NestwaveSasMember to label_NestwaveSasMember_1" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NestwaveSasMember" xlink:to="label_NestwaveSasMember_2" xlink:title="Label : NestwaveSasMember to label_NestwaveSasMember_2" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_TechnologyBasedIntangibleAssetsMember" xlink:label="TechnologyBasedIntangibleAssetsMember" xlink:title="TechnologyBasedIntangibleAssetsMember" />
    <link:label xlink:type="resource" xlink:label="label_TechnologyBasedIntangibleAssetsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_TechnologyBasedIntangibleAssetsMember" xml:lang="en-US" id="label_TechnologyBasedIntangibleAssetsMember">Technology-Based Intangible Assets [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="TechnologyBasedIntangibleAssetsMember" xlink:to="label_TechnologyBasedIntangibleAssetsMember" xlink:title="Label : TechnologyBasedIntangibleAssetsMember to label_TechnologyBasedIntangibleAssetsMember" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ComputerSoftwareIntangibleAssetMember" xlink:label="ComputerSoftwareIntangibleAssetMember" xlink:title="ComputerSoftwareIntangibleAssetMember" />
    <link:label xlink:type="resource" xlink:label="label_ComputerSoftwareIntangibleAssetMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ComputerSoftwareIntangibleAssetMember" xml:lang="en-US" id="label_ComputerSoftwareIntangibleAssetMember">Computer Software, Intangible Asset [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ComputerSoftwareIntangibleAssetMember" xlink:to="label_ComputerSoftwareIntangibleAssetMember" xlink:title="Label : ComputerSoftwareIntangibleAssetMember to label_ComputerSoftwareIntangibleAssetMember" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired" xlink:label="PaymentsToAcquireBusinessesNetOfCashAcquired" xlink:title="PaymentsToAcquireBusinessesNetOfCashAcquired" />
    <link:label xlink:type="resource" xlink:label="label_PaymentsToAcquireBusinessesNetOfCashAcquired" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_PaymentsToAcquireBusinessesNetOfCashAcquired" xml:lang="en-US" id="label_PaymentsToAcquireBusinessesNetOfCashAcquired">Cash paid to acquire businesses, net of cash acquired</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PaymentsToAcquireBusinessesNetOfCashAcquired" xlink:to="label_PaymentsToAcquireBusinessesNetOfCashAcquired" xlink:title="Label : PaymentsToAcquireBusinessesNetOfCashAcquired to label_PaymentsToAcquireBusinessesNetOfCashAcquired" />
    <link:label xlink:type="resource" xlink:label="label_PaymentsToAcquireBusinessesNetOfCashAcquired_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_PaymentsToAcquireBusinessesNetOfCashAcquired_1" xml:lang="en-US" id="label_PaymentsToAcquireBusinessesNetOfCashAcquired_1">Payments to Acquire Businesses, Net of Cash Acquired</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PaymentsToAcquireBusinessesNetOfCashAcquired" xlink:to="label_PaymentsToAcquireBusinessesNetOfCashAcquired_1" xlink:title="Label : PaymentsToAcquireBusinessesNetOfCashAcquired to label_PaymentsToAcquireBusinessesNetOfCashAcquired_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CashAcquiredFromAcquisition" xlink:label="CashAcquiredFromAcquisition" xlink:title="CashAcquiredFromAcquisition" />
    <link:label xlink:type="resource" xlink:label="label_CashAcquiredFromAcquisition" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_CashAcquiredFromAcquisition" xml:lang="en-US" id="label_CashAcquiredFromAcquisition">Cash acquired</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CashAcquiredFromAcquisition" xlink:to="label_CashAcquiredFromAcquisition" xlink:title="Label : CashAcquiredFromAcquisition to label_CashAcquiredFromAcquisition" />
    <link:label xlink:type="resource" xlink:label="label_CashAcquiredFromAcquisition_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CashAcquiredFromAcquisition_1" xml:lang="en-US" id="label_CashAcquiredFromAcquisition_1">Cash Acquired from Acquisition</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CashAcquiredFromAcquisition" xlink:to="label_CashAcquiredFromAcquisition_1" xlink:title="Label : CashAcquiredFromAcquisition to label_CashAcquiredFromAcquisition_1" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_BusinessCombinationConsiderationTransferredUpfrontCashPayment" xlink:label="BusinessCombinationConsiderationTransferredUpfrontCashPayment" xlink:title="BusinessCombinationConsiderationTransferredUpfrontCashPayment" />
    <link:label xlink:type="resource" xlink:label="label_BusinessCombinationConsiderationTransferredUpfrontCashPayment" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_BusinessCombinationConsiderationTransferredUpfrontCashPayment" xml:lang="en-US" id="label_BusinessCombinationConsiderationTransferredUpfrontCashPayment">The cash outflow associated with the acquisition of business during the period as upfront cash payment.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="BusinessCombinationConsiderationTransferredUpfrontCashPayment" xlink:to="label_BusinessCombinationConsiderationTransferredUpfrontCashPayment" xlink:title="Label : BusinessCombinationConsiderationTransferredUpfrontCashPayment to label_BusinessCombinationConsiderationTransferredUpfrontCashPayment" />
    <link:label xlink:type="resource" xlink:label="label_BusinessCombinationConsiderationTransferredUpfrontCashPayment_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_BusinessCombinationConsiderationTransferredUpfrontCashPayment_1" xml:lang="en-US" id="label_BusinessCombinationConsiderationTransferredUpfrontCashPayment_1">Upfront cash payment</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="BusinessCombinationConsiderationTransferredUpfrontCashPayment" xlink:to="label_BusinessCombinationConsiderationTransferredUpfrontCashPayment_1" xlink:title="Label : BusinessCombinationConsiderationTransferredUpfrontCashPayment to label_BusinessCombinationConsiderationTransferredUpfrontCashPayment_1" />
    <link:label xlink:type="resource" xlink:label="label_BusinessCombinationConsiderationTransferredUpfrontCashPayment_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_BusinessCombinationConsiderationTransferredUpfrontCashPayment_2" xml:lang="en-US" id="label_BusinessCombinationConsiderationTransferredUpfrontCashPayment_2">Business Combination, Consideration Transferred, upfront cash payment</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="BusinessCombinationConsiderationTransferredUpfrontCashPayment" xlink:to="label_BusinessCombinationConsiderationTransferredUpfrontCashPayment_2" xlink:title="Label : BusinessCombinationConsiderationTransferredUpfrontCashPayment to label_BusinessCombinationConsiderationTransferredUpfrontCashPayment_2" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PaymentsToAcquireBusinessesGross" xlink:label="PaymentsToAcquireBusinessesGross" xlink:title="PaymentsToAcquireBusinessesGross" />
    <link:label xlink:type="resource" xlink:label="label_PaymentsToAcquireBusinessesGross" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="label_PaymentsToAcquireBusinessesGross" xml:lang="en-US" id="label_PaymentsToAcquireBusinessesGross">Cash paid to acquire businesses</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PaymentsToAcquireBusinessesGross" xlink:to="label_PaymentsToAcquireBusinessesGross" xlink:title="Label : PaymentsToAcquireBusinessesGross to label_PaymentsToAcquireBusinessesGross" />
    <link:label xlink:type="resource" xlink:label="label_PaymentsToAcquireBusinessesGross_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_PaymentsToAcquireBusinessesGross_1" xml:lang="en-US" id="label_PaymentsToAcquireBusinessesGross_1">Payments to Acquire Businesses, Gross</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PaymentsToAcquireBusinessesGross" xlink:to="label_PaymentsToAcquireBusinessesGross_1" xlink:title="Label : PaymentsToAcquireBusinessesGross to label_PaymentsToAcquireBusinessesGross_1" />
    <link:label xlink:type="resource" xlink:label="label_PaymentsToAcquireBusinessesGross_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_PaymentsToAcquireBusinessesGross_2" xml:lang="en-US" id="label_PaymentsToAcquireBusinessesGross_2">Proceeds to pay the outstanding balance</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PaymentsToAcquireBusinessesGross" xlink:to="label_PaymentsToAcquireBusinessesGross_2" xlink:title="Label : PaymentsToAcquireBusinessesGross to label_PaymentsToAcquireBusinessesGross_2" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessCombinationConsiderationTransferredLiabilitiesIncurred" xlink:label="BusinessCombinationConsiderationTransferredLiabilitiesIncurred" xlink:title="BusinessCombinationConsiderationTransferredLiabilitiesIncurred" />
    <link:label xlink:type="resource" xlink:label="label_BusinessCombinationConsiderationTransferredLiabilitiesIncurred" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_BusinessCombinationConsiderationTransferredLiabilitiesIncurred" xml:lang="en-US" id="label_BusinessCombinationConsiderationTransferredLiabilitiesIncurred">Cash payable to acquire businesses on or prior to first anniversary</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="BusinessCombinationConsiderationTransferredLiabilitiesIncurred" xlink:to="label_BusinessCombinationConsiderationTransferredLiabilitiesIncurred" xlink:title="Label : BusinessCombinationConsiderationTransferredLiabilitiesIncurred to label_BusinessCombinationConsiderationTransferredLiabilitiesIncurred" />
    <link:label xlink:type="resource" xlink:label="label_BusinessCombinationConsiderationTransferredLiabilitiesIncurred_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_BusinessCombinationConsiderationTransferredLiabilitiesIncurred_1" xml:lang="en-US" id="label_BusinessCombinationConsiderationTransferredLiabilitiesIncurred_1">Business Combination, Consideration Transferred, Liabilities Incurred</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="BusinessCombinationConsiderationTransferredLiabilitiesIncurred" xlink:to="label_BusinessCombinationConsiderationTransferredLiabilitiesIncurred_1" xlink:title="Label : BusinessCombinationConsiderationTransferredLiabilitiesIncurred to label_BusinessCombinationConsiderationTransferredLiabilitiesIncurred_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued" xlink:label="BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued" xlink:title="BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued" />
    <link:label xlink:type="resource" xlink:label="label_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued" xml:lang="en-US" id="label_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued">Business combination, consideration transferred, equity interests issued and issuable, number of shares</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued" xlink:to="label_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued" xlink:title="Label : BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued to label_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued" />
    <link:label xlink:type="resource" xlink:label="label_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued_1" xml:lang="en-US" id="label_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued_1">Business Acquisition, Equity Interest Issued or Issuable, Number of Shares</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued" xlink:to="label_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued_1" xlink:title="Label : BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued to label_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable" xlink:label="BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable" xlink:title="BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable" xlink:to="label_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable" xlink:title="Label : BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable to label_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable" />
    <link:label xlink:type="resource" xlink:label="label_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable_1" xml:lang="en-US" id="label_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable_1">Business Combination, Consideration Transferred, Equity Interests Issued and Issuable</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable" xlink:to="label_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable_1" xlink:title="Label : BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable to label_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessCombinationContingentConsiderationLiabilityCurrent" xlink:label="BusinessCombinationContingentConsiderationLiabilityCurrent" xlink:title="BusinessCombinationContingentConsiderationLiabilityCurrent" />
    <link:label xlink:type="resource" xlink:label="label_BusinessCombinationContingentConsiderationLiabilityCurrent" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_BusinessCombinationContingentConsiderationLiabilityCurrent" xml:lang="en-US" id="label_BusinessCombinationContingentConsiderationLiabilityCurrent">Cash contingent consideration</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="BusinessCombinationContingentConsiderationLiabilityCurrent" xlink:to="label_BusinessCombinationContingentConsiderationLiabilityCurrent" xlink:title="Label : BusinessCombinationContingentConsiderationLiabilityCurrent to label_BusinessCombinationContingentConsiderationLiabilityCurrent" />
    <link:label xlink:type="resource" xlink:label="label_BusinessCombinationContingentConsiderationLiabilityCurrent_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_BusinessCombinationContingentConsiderationLiabilityCurrent_1" xml:lang="en-US" id="label_BusinessCombinationContingentConsiderationLiabilityCurrent_1">Cash paid to contingent consideration liability</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="BusinessCombinationContingentConsiderationLiabilityCurrent" xlink:to="label_BusinessCombinationContingentConsiderationLiabilityCurrent_1" xlink:title="Label : BusinessCombinationContingentConsiderationLiabilityCurrent to label_BusinessCombinationContingentConsiderationLiabilityCurrent_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1" xlink:label="BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1" xlink:title="BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1" xlink:to="label_BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1" xlink:title="Label : BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1 to label_BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1" />
    <link:label xlink:type="resource" xlink:label="label_BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1_1" xml:lang="en-US" id="label_BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1_1">Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1" xlink:to="label_BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1_1" xlink:title="Label : BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1 to label_BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PaymentForContingentConsiderationLiabilityInvestingActivities" xlink:label="PaymentForContingentConsiderationLiabilityInvestingActivities" xlink:title="PaymentForContingentConsiderationLiabilityInvestingActivities" />
    <link:label xlink:type="resource" xlink:label="label_PaymentForContingentConsiderationLiabilityInvestingActivities" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_PaymentForContingentConsiderationLiabilityInvestingActivities" xml:lang="en-US" id="label_PaymentForContingentConsiderationLiabilityInvestingActivities">Cash paid to settle a portion of the contingent consideration liability</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PaymentForContingentConsiderationLiabilityInvestingActivities" xlink:to="label_PaymentForContingentConsiderationLiabilityInvestingActivities" xlink:title="Label : PaymentForContingentConsiderationLiabilityInvestingActivities to label_PaymentForContingentConsiderationLiabilityInvestingActivities" />
    <link:label xlink:type="resource" xlink:label="label_PaymentForContingentConsiderationLiabilityInvestingActivities_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_PaymentForContingentConsiderationLiabilityInvestingActivities_1" xml:lang="en-US" id="label_PaymentForContingentConsiderationLiabilityInvestingActivities_1">Payment for Contingent Consideration Liability, Investing Activities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PaymentForContingentConsiderationLiabilityInvestingActivities" xlink:to="label_PaymentForContingentConsiderationLiabilityInvestingActivities_1" xlink:title="Label : PaymentForContingentConsiderationLiabilityInvestingActivities to label_PaymentForContingentConsiderationLiabilityInvestingActivities_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessCombinationAcquisitionRelatedCosts" xlink:label="BusinessCombinationAcquisitionRelatedCosts" xlink:title="BusinessCombinationAcquisitionRelatedCosts" />
    <link:label xlink:type="resource" xlink:label="label_BusinessCombinationAcquisitionRelatedCosts" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_BusinessCombinationAcquisitionRelatedCosts" xml:lang="en-US" id="label_BusinessCombinationAcquisitionRelatedCosts">Acquisition-related costs</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="BusinessCombinationAcquisitionRelatedCosts" xlink:to="label_BusinessCombinationAcquisitionRelatedCosts" xlink:title="Label : BusinessCombinationAcquisitionRelatedCosts to label_BusinessCombinationAcquisitionRelatedCosts" />
    <link:label xlink:type="resource" xlink:label="label_BusinessCombinationAcquisitionRelatedCosts_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_BusinessCombinationAcquisitionRelatedCosts_1" xml:lang="en-US" id="label_BusinessCombinationAcquisitionRelatedCosts_1">Acquisition-related costs</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="BusinessCombinationAcquisitionRelatedCosts" xlink:to="label_BusinessCombinationAcquisitionRelatedCosts_1" xlink:title="Label : BusinessCombinationAcquisitionRelatedCosts to label_BusinessCombinationAcquisitionRelatedCosts_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessCombinationAcquisitionOfLessThan100PercentNoncontrollingInterestFairValue" xlink:label="BusinessCombinationAcquisitionOfLessThan100PercentNoncontrollingInterestFairValue" xlink:title="BusinessCombinationAcquisitionOfLessThan100PercentNoncontrollingInterestFairValue" />
    <link:label xlink:type="resource" xlink:label="label_BusinessCombinationAcquisitionOfLessThan100PercentNoncontrollingInterestFairValue" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_BusinessCombinationAcquisitionOfLessThan100PercentNoncontrollingInterestFairValue" xml:lang="en-US" id="label_BusinessCombinationAcquisitionOfLessThan100PercentNoncontrollingInterestFairValue">Warrants recognized at acquisition date fair value</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="BusinessCombinationAcquisitionOfLessThan100PercentNoncontrollingInterestFairValue" xlink:to="label_BusinessCombinationAcquisitionOfLessThan100PercentNoncontrollingInterestFairValue" xlink:title="Label : BusinessCombinationAcquisitionOfLessThan100PercentNoncontrollingInterestFairValue to label_BusinessCombinationAcquisitionOfLessThan100PercentNoncontrollingInterestFairValue" />
    <link:label xlink:type="resource" xlink:label="label_BusinessCombinationAcquisitionOfLessThan100PercentNoncontrollingInterestFairValue_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_BusinessCombinationAcquisitionOfLessThan100PercentNoncontrollingInterestFairValue_1" xml:lang="en-US" id="label_BusinessCombinationAcquisitionOfLessThan100PercentNoncontrollingInterestFairValue_1">Business Combination, Acquisition of Less than 100 Percent, Noncontrolling Interest, Fair Value</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="BusinessCombinationAcquisitionOfLessThan100PercentNoncontrollingInterestFairValue" xlink:to="label_BusinessCombinationAcquisitionOfLessThan100PercentNoncontrollingInterestFairValue_1" xlink:title="Label : BusinessCombinationAcquisitionOfLessThan100PercentNoncontrollingInterestFairValue to label_BusinessCombinationAcquisitionOfLessThan100PercentNoncontrollingInterestFairValue_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsiderationWarrantsIssued1" xlink:label="NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsiderationWarrantsIssued1" xlink:title="NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsiderationWarrantsIssued1" />
    <link:label xlink:type="resource" xlink:label="label_NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsiderationWarrantsIssued1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsiderationWarrantsIssued1" xml:lang="en-US" id="label_NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsiderationWarrantsIssued1">Warrants issued</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsiderationWarrantsIssued1" xlink:to="label_NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsiderationWarrantsIssued1" xlink:title="Label : NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsiderationWarrantsIssued1 to label_NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsiderationWarrantsIssued1" />
    <link:label xlink:type="resource" xlink:label="label_NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsiderationWarrantsIssued1_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsiderationWarrantsIssued1_1" xml:lang="en-US" id="label_NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsiderationWarrantsIssued1_1">Noncash or Part Noncash Acquisition, Noncash Financial or Equity Instrument Consideration, Warrants Issued</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsiderationWarrantsIssued1" xlink:to="label_NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsiderationWarrantsIssued1_1" xlink:title="Label : NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsiderationWarrantsIssued1 to label_NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsiderationWarrantsIssued1_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsiderationSharesIssued1" xlink:label="NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsiderationSharesIssued1" xlink:title="NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsiderationSharesIssued1" />
    <link:label xlink:type="resource" xlink:label="label_NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsiderationSharesIssued1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsiderationSharesIssued1" xml:lang="en-US" id="label_NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsiderationSharesIssued1">Common stock issued for warrant exercised</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsiderationSharesIssued1" xlink:to="label_NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsiderationSharesIssued1" xlink:title="Label : NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsiderationSharesIssued1 to label_NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsiderationSharesIssued1" />
    <link:label xlink:type="resource" xlink:label="label_NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsiderationSharesIssued1_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsiderationSharesIssued1_1" xml:lang="en-US" id="label_NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsiderationSharesIssued1_1">Noncash or Part Noncash Acquisition, Noncash Financial or Equity Instrument Consideration, Shares Issued</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsiderationSharesIssued1" xlink:to="label_NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsiderationSharesIssued1_1" xlink:title="Label : NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsiderationSharesIssued1 to label_NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsiderationSharesIssued1_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LossContingencySettlementAgreementTerms" xlink:label="LossContingencySettlementAgreementTerms" xlink:title="LossContingencySettlementAgreementTerms" />
    <link:label xlink:type="resource" xlink:label="label_LossContingencySettlementAgreementTerms" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_LossContingencySettlementAgreementTerms" xml:lang="en-US" id="label_LossContingencySettlementAgreementTerms">Contingency, settlement, terms</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LossContingencySettlementAgreementTerms" xlink:to="label_LossContingencySettlementAgreementTerms" xlink:title="Label : LossContingencySettlementAgreementTerms to label_LossContingencySettlementAgreementTerms" />
    <link:label xlink:type="resource" xlink:label="label_LossContingencySettlementAgreementTerms_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_LossContingencySettlementAgreementTerms_1" xml:lang="en-US" id="label_LossContingencySettlementAgreementTerms_1">Contingency, settlement, terms</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LossContingencySettlementAgreementTerms" xlink:to="label_LossContingencySettlementAgreementTerms_1" xlink:title="Label : LossContingencySettlementAgreementTerms to label_LossContingencySettlementAgreementTerms_1" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_BusinessAcquisitionStageAxis" xlink:label="BusinessAcquisitionStageAxis" xlink:title="BusinessAcquisitionStageAxis" />
    <link:label xlink:type="resource" xlink:label="label_BusinessAcquisitionStageAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_BusinessAcquisitionStageAxis" xml:lang="en-US" id="label_BusinessAcquisitionStageAxis">Business Acquisition Stage [axis]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="BusinessAcquisitionStageAxis" xlink:to="label_BusinessAcquisitionStageAxis" xlink:title="Label : BusinessAcquisitionStageAxis to label_BusinessAcquisitionStageAxis" />
    <link:label xlink:type="resource" xlink:label="label_BusinessAcquisitionStageAxis_1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_BusinessAcquisitionStageAxis_1" xml:lang="en-US" id="label_BusinessAcquisitionStageAxis_1">Information by the stages of business acquisition.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="BusinessAcquisitionStageAxis" xlink:to="label_BusinessAcquisitionStageAxis_1" xlink:title="Label : BusinessAcquisitionStageAxis to label_BusinessAcquisitionStageAxis_1" />
    <link:label xlink:type="resource" xlink:label="label_BusinessAcquisitionStageAxis_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_BusinessAcquisitionStageAxis_2" xml:lang="en-US" id="label_BusinessAcquisitionStageAxis_2">Business Acquisition Stage [axis]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="BusinessAcquisitionStageAxis" xlink:to="label_BusinessAcquisitionStageAxis_2" xlink:title="Label : BusinessAcquisitionStageAxis to label_BusinessAcquisitionStageAxis_2" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_StageTypeDomain" xlink:label="StageTypeDomain" xlink:title="StageTypeDomain" />
    <link:label xlink:type="resource" xlink:label="label_StageTypeDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_StageTypeDomain" xml:lang="en-US" id="label_StageTypeDomain">Stage Type [domain]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StageTypeDomain" xlink:to="label_StageTypeDomain" xlink:title="Label : StageTypeDomain to label_StageTypeDomain" />
    <link:label xlink:type="resource" xlink:label="label_StageTypeDomain_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_StageTypeDomain_1" xml:lang="en-US" id="label_StageTypeDomain_1">Stage Type [domain]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StageTypeDomain" xlink:to="label_StageTypeDomain_1" xlink:title="Label : StageTypeDomain to label_StageTypeDomain_1" />
    <link:label xlink:type="resource" xlink:label="label_StageTypeDomain_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_StageTypeDomain_2" xml:lang="en-US" id="label_StageTypeDomain_2">Identification of stages of business acquisition.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StageTypeDomain" xlink:to="label_StageTypeDomain_2" xlink:title="Label : StageTypeDomain to label_StageTypeDomain_2" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_InitialAccountingIncompleteMember" xlink:label="InitialAccountingIncompleteMember" xlink:title="InitialAccountingIncompleteMember" />
    <link:label xlink:type="resource" xlink:label="label_InitialAccountingIncompleteMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_InitialAccountingIncompleteMember" xml:lang="en-US" id="label_InitialAccountingIncompleteMember">Preliminary</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InitialAccountingIncompleteMember" xlink:to="label_InitialAccountingIncompleteMember" xlink:title="Label : InitialAccountingIncompleteMember to label_InitialAccountingIncompleteMember" />
    <link:label xlink:type="resource" xlink:label="label_InitialAccountingIncompleteMember_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_InitialAccountingIncompleteMember_1" xml:lang="en-US" id="label_InitialAccountingIncompleteMember_1">Initial Accounting Incomplete [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InitialAccountingIncompleteMember" xlink:to="label_InitialAccountingIncompleteMember_1" xlink:title="Label : InitialAccountingIncompleteMember to label_InitialAccountingIncompleteMember_1" />
    <link:label xlink:type="resource" xlink:label="label_InitialAccountingIncompleteMember_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_InitialAccountingIncompleteMember_2" xml:lang="en-US" id="label_InitialAccountingIncompleteMember_2">This member stands for the information pertaining to "Initial Accounting Incomplete" in connection with a business combination.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InitialAccountingIncompleteMember" xlink:to="label_InitialAccountingIncompleteMember_2" xlink:title="Label : InitialAccountingIncompleteMember to label_InitialAccountingIncompleteMember_2" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_MeasurementPeriodAdjustmentsMember" xlink:label="MeasurementPeriodAdjustmentsMember" xlink:title="MeasurementPeriodAdjustmentsMember" />
    <link:label xlink:type="resource" xlink:label="label_MeasurementPeriodAdjustmentsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_MeasurementPeriodAdjustmentsMember" xml:lang="en-US" id="label_MeasurementPeriodAdjustmentsMember">Adjustments</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MeasurementPeriodAdjustmentsMember" xlink:to="label_MeasurementPeriodAdjustmentsMember" xlink:title="Label : MeasurementPeriodAdjustmentsMember to label_MeasurementPeriodAdjustmentsMember" />
    <link:label xlink:type="resource" xlink:label="label_MeasurementPeriodAdjustmentsMember_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_MeasurementPeriodAdjustmentsMember_1" xml:lang="en-US" id="label_MeasurementPeriodAdjustmentsMember_1">Measurement Period Adjustments [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MeasurementPeriodAdjustmentsMember" xlink:to="label_MeasurementPeriodAdjustmentsMember_1" xlink:title="Label : MeasurementPeriodAdjustmentsMember to label_MeasurementPeriodAdjustmentsMember_1" />
    <link:label xlink:type="resource" xlink:label="label_MeasurementPeriodAdjustmentsMember_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_MeasurementPeriodAdjustmentsMember_2" xml:lang="en-US" id="label_MeasurementPeriodAdjustmentsMember_2">This member stands for the information pertaining to "measurement period adjustments" in connection with a business combination.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MeasurementPeriodAdjustmentsMember" xlink:to="label_MeasurementPeriodAdjustmentsMember_2" xlink:title="Label : MeasurementPeriodAdjustmentsMember to label_MeasurementPeriodAdjustmentsMember_2" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessCombinationDescriptionAbstract" xlink:label="BusinessCombinationDescriptionAbstract" xlink:title="BusinessCombinationDescriptionAbstract" />
    <link:label xlink:type="resource" xlink:label="label_BusinessCombinationDescriptionAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_BusinessCombinationDescriptionAbstract" xml:lang="en-US" id="label_BusinessCombinationDescriptionAbstract">Business Combination, Description [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="BusinessCombinationDescriptionAbstract" xlink:to="label_BusinessCombinationDescriptionAbstract" xlink:title="Label : BusinessCombinationDescriptionAbstract to label_BusinessCombinationDescriptionAbstract" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents" xlink:label="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents" xlink:title="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents" />
    <link:label xlink:type="resource" xlink:label="label_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents" xml:lang="en-US" id="label_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents">Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Cash And Equivalents</link:label>
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    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsOther" xlink:label="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsOther" xlink:title="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsOther" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsOther" xlink:to="label_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsOther" xlink:title="Label : BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsOther to label_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsOther" />
    <link:label xlink:type="resource" xlink:label="label_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsOther_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsOther_1" xml:lang="en-US" id="label_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsOther_1">Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Other</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsOther" xlink:to="label_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsOther_1" xlink:title="Label : BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsOther to label_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsOther_1" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncomeTaxExpenseBenefit" xlink:to="label_IncomeTaxExpenseBenefit_1" xlink:title="Label : IncomeTaxExpenseBenefit to label_IncomeTaxExpenseBenefit_1" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncomeTaxExpenseBenefit" xlink:to="label_IncomeTaxExpenseBenefit_2" xlink:title="Label : IncomeTaxExpenseBenefit to label_IncomeTaxExpenseBenefit_2" />
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    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProceedsFromIssuanceOfSeniorLongTermDebt" xlink:label="ProceedsFromIssuanceOfSeniorLongTermDebt" xlink:title="ProceedsFromIssuanceOfSeniorLongTermDebt" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ProceedsFromIssuanceOfSeniorLongTermDebt" xlink:to="label_ProceedsFromIssuanceOfSeniorLongTermDebt" xlink:title="Label : ProceedsFromIssuanceOfSeniorLongTermDebt to label_ProceedsFromIssuanceOfSeniorLongTermDebt" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ProceedsFromIssuanceOfSeniorLongTermDebt" xlink:to="label_ProceedsFromIssuanceOfSeniorLongTermDebt_1" xlink:title="Label : ProceedsFromIssuanceOfSeniorLongTermDebt to label_ProceedsFromIssuanceOfSeniorLongTermDebt_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate" xlink:label="ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate" xlink:to="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate" xlink:title="Label : ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate to label_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate" />
    <link:label xlink:type="resource" xlink:label="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_1" xml:lang="en-US" id="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_1">Risk-free rate</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate" xlink:to="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_1" xlink:title="Label : ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate to label_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_1" />
    <link:label xlink:type="resource" xlink:label="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_2" xml:lang="en-US" id="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_2">Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate" xlink:to="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_2" xlink:title="Label : ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate to label_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_2" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_IncreaseDereaseThroughChangeInEstimateForInitialRecognitionOfConversionOptionDerivativeLiability" xlink:label="IncreaseDereaseThroughChangeInEstimateForInitialRecognitionOfConversionOptionDerivativeLiability" xlink:title="IncreaseDereaseThroughChangeInEstimateForInitialRecognitionOfConversionOptionDerivativeLiability" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncreaseDereaseThroughChangeInEstimateForInitialRecognitionOfConversionOptionDerivativeLiability" xlink:to="label_IncreaseDereaseThroughChangeInEstimateForInitialRecognitionOfConversionOptionDerivativeLiability" xlink:title="Label : IncreaseDereaseThroughChangeInEstimateForInitialRecognitionOfConversionOptionDerivativeLiability to label_IncreaseDereaseThroughChangeInEstimateForInitialRecognitionOfConversionOptionDerivativeLiability" />
    <link:label xlink:type="resource" xlink:label="label_IncreaseDereaseThroughChangeInEstimateForInitialRecognitionOfConversionOptionDerivativeLiability_1" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:title="label_IncreaseDereaseThroughChangeInEstimateForInitialRecognitionOfConversionOptionDerivativeLiability_1" xml:lang="en-US" id="label_IncreaseDereaseThroughChangeInEstimateForInitialRecognitionOfConversionOptionDerivativeLiability_1">Change in estimate related to initial recognition of derivative liability</link:label>
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    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_StockIssuedDuringPeriodSharesRestrictedStockAwardVested" xlink:label="StockIssuedDuringPeriodSharesRestrictedStockAwardVested" xlink:title="StockIssuedDuringPeriodSharesRestrictedStockAwardVested" />
    <link:label xlink:type="resource" xlink:label="label_StockIssuedDuringPeriodSharesRestrictedStockAwardVested" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_StockIssuedDuringPeriodSharesRestrictedStockAwardVested" xml:lang="en-US" id="label_StockIssuedDuringPeriodSharesRestrictedStockAwardVested">Vesting of RSUs (in shares)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockIssuedDuringPeriodSharesRestrictedStockAwardVested" xlink:to="label_StockIssuedDuringPeriodSharesRestrictedStockAwardVested" xlink:title="Label : StockIssuedDuringPeriodSharesRestrictedStockAwardVested to label_StockIssuedDuringPeriodSharesRestrictedStockAwardVested" />
    <link:label xlink:type="resource" xlink:label="label_StockIssuedDuringPeriodSharesRestrictedStockAwardVested_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_StockIssuedDuringPeriodSharesRestrictedStockAwardVested_1" xml:lang="en-US" id="label_StockIssuedDuringPeriodSharesRestrictedStockAwardVested_1">Stock Issued During Period, Shares, Restricted Stock Award, Vested</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockIssuedDuringPeriodSharesRestrictedStockAwardVested" xlink:to="label_StockIssuedDuringPeriodSharesRestrictedStockAwardVested_1" xlink:title="Label : StockIssuedDuringPeriodSharesRestrictedStockAwardVested to label_StockIssuedDuringPeriodSharesRestrictedStockAwardVested_1" />
    <link:label xlink:type="resource" xlink:label="label_StockIssuedDuringPeriodSharesRestrictedStockAwardVested_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_StockIssuedDuringPeriodSharesRestrictedStockAwardVested_2" xml:lang="en-US" id="label_StockIssuedDuringPeriodSharesRestrictedStockAwardVested_2">Total number of shares issued during the period, including shares vested, as a result of restricted atock awards vested.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockIssuedDuringPeriodSharesRestrictedStockAwardVested" xlink:to="label_StockIssuedDuringPeriodSharesRestrictedStockAwardVested_2" xlink:title="Label : StockIssuedDuringPeriodSharesRestrictedStockAwardVested to label_StockIssuedDuringPeriodSharesRestrictedStockAwardVested_2" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_StockIssuedDuringPeriodValueRestrictedStockAwardVested" xlink:label="StockIssuedDuringPeriodValueRestrictedStockAwardVested" xlink:title="StockIssuedDuringPeriodValueRestrictedStockAwardVested" />
    <link:label xlink:type="resource" xlink:label="label_StockIssuedDuringPeriodValueRestrictedStockAwardVested" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_StockIssuedDuringPeriodValueRestrictedStockAwardVested" xml:lang="en-US" id="label_StockIssuedDuringPeriodValueRestrictedStockAwardVested">Vesting of RSUs</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockIssuedDuringPeriodValueRestrictedStockAwardVested" xlink:to="label_StockIssuedDuringPeriodValueRestrictedStockAwardVested" xlink:title="Label : StockIssuedDuringPeriodValueRestrictedStockAwardVested to label_StockIssuedDuringPeriodValueRestrictedStockAwardVested" />
    <link:label xlink:type="resource" xlink:label="label_StockIssuedDuringPeriodValueRestrictedStockAwardVested_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_StockIssuedDuringPeriodValueRestrictedStockAwardVested_1" xml:lang="en-US" id="label_StockIssuedDuringPeriodValueRestrictedStockAwardVested_1">Stock Issued During Period, Value, Restricted Stock Award, Vested</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockIssuedDuringPeriodValueRestrictedStockAwardVested" xlink:to="label_StockIssuedDuringPeriodValueRestrictedStockAwardVested_1" xlink:title="Label : StockIssuedDuringPeriodValueRestrictedStockAwardVested to label_StockIssuedDuringPeriodValueRestrictedStockAwardVested_1" />
    <link:label xlink:type="resource" xlink:label="label_StockIssuedDuringPeriodValueRestrictedStockAwardVested_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_StockIssuedDuringPeriodValueRestrictedStockAwardVested_2" xml:lang="en-US" id="label_StockIssuedDuringPeriodValueRestrictedStockAwardVested_2">Aggregate value of stock related to restricted stock awards vested during the period.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockIssuedDuringPeriodValueRestrictedStockAwardVested" xlink:to="label_StockIssuedDuringPeriodValueRestrictedStockAwardVested_2" xlink:title="Label : StockIssuedDuringPeriodValueRestrictedStockAwardVested to label_StockIssuedDuringPeriodValueRestrictedStockAwardVested_2" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InterestPayableCurrentAndNoncurrent" xlink:label="InterestPayableCurrentAndNoncurrent" xlink:title="InterestPayableCurrentAndNoncurrent" />
    <link:label xlink:type="resource" xlink:label="label_InterestPayableCurrentAndNoncurrent" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_InterestPayableCurrentAndNoncurrent" xml:lang="en-US" id="label_InterestPayableCurrentAndNoncurrent">Interest Payable</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InterestPayableCurrentAndNoncurrent" xlink:to="label_InterestPayableCurrentAndNoncurrent" xlink:title="Label : InterestPayableCurrentAndNoncurrent to label_InterestPayableCurrentAndNoncurrent" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember" xlink:label="AccumulatedOtherComprehensiveIncomeMember" xlink:title="AccumulatedOtherComprehensiveIncomeMember" />
    <link:label xlink:type="resource" xlink:label="label_AccumulatedOtherComprehensiveIncomeMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_AccumulatedOtherComprehensiveIncomeMember" xml:lang="en-US" id="label_AccumulatedOtherComprehensiveIncomeMember">Accumulated Other Comprehensive Income</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AccumulatedOtherComprehensiveIncomeMember" xlink:to="label_AccumulatedOtherComprehensiveIncomeMember" xlink:title="Label : AccumulatedOtherComprehensiveIncomeMember to label_AccumulatedOtherComprehensiveIncomeMember" />
    <link:label xlink:type="resource" xlink:label="label_AccumulatedOtherComprehensiveIncomeMember_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AccumulatedOtherComprehensiveIncomeMember_1" xml:lang="en-US" id="label_AccumulatedOtherComprehensiveIncomeMember_1">AOCI Attributable to Parent [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AccumulatedOtherComprehensiveIncomeMember" xlink:to="label_AccumulatedOtherComprehensiveIncomeMember_1" xlink:title="Label : AccumulatedOtherComprehensiveIncomeMember to label_AccumulatedOtherComprehensiveIncomeMember_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures" xlink:label="StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures" xlink:title="StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures" xlink:to="label_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures" xlink:title="Label : StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures to label_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures" />
    <link:label xlink:type="resource" xlink:label="label_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures_1" xml:lang="en-US" id="label_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures_1">Issuance of RSAs</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures" xlink:to="label_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures_1" xlink:title="Label : StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures to label_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherNonoperatingIncomeExpense" xlink:label="OtherNonoperatingIncomeExpense" xlink:title="OtherNonoperatingIncomeExpense" />
    <link:label xlink:type="resource" xlink:label="label_OtherNonoperatingIncomeExpense" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_OtherNonoperatingIncomeExpense" xml:lang="en-US" id="label_OtherNonoperatingIncomeExpense">Other income (loss), net</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OtherNonoperatingIncomeExpense" xlink:to="label_OtherNonoperatingIncomeExpense" xlink:title="Label : OtherNonoperatingIncomeExpense to label_OtherNonoperatingIncomeExpense" />
    <link:label xlink:type="resource" xlink:label="label_OtherNonoperatingIncomeExpense_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_OtherNonoperatingIncomeExpense_1" xml:lang="en-US" id="label_OtherNonoperatingIncomeExpense_1">Other Nonoperating Income (Expense)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OtherNonoperatingIncomeExpense" xlink:to="label_OtherNonoperatingIncomeExpense_1" xlink:title="Label : OtherNonoperatingIncomeExpense to label_OtherNonoperatingIncomeExpense_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InterestPaidNet" xlink:label="InterestPaidNet" xlink:title="InterestPaidNet" />
    <link:label xlink:type="resource" xlink:label="label_InterestPaidNet" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_InterestPaidNet" xml:lang="en-US" id="label_InterestPaidNet">Interest Paid, Excluding Capitalized Interest, Operating Activity</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InterestPaidNet" xlink:to="label_InterestPaidNet" xlink:title="Label : InterestPaidNet to label_InterestPaidNet" />
    <link:label xlink:type="resource" xlink:label="label_InterestPaidNet_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_InterestPaidNet_1" xml:lang="en-US" id="label_InterestPaidNet_1">Interest paid in cash</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InterestPaidNet" xlink:to="label_InterestPaidNet_1" xlink:title="Label : InterestPaidNet to label_InterestPaidNet_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GoodwillAndIntangibleAssetsIntangibleAssetsIndefiniteLivedPolicy" xlink:label="GoodwillAndIntangibleAssetsIntangibleAssetsIndefiniteLivedPolicy" xlink:title="GoodwillAndIntangibleAssetsIntangibleAssetsIndefiniteLivedPolicy" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="GoodwillAndIntangibleAssetsIntangibleAssetsIndefiniteLivedPolicy" xlink:to="label_GoodwillAndIntangibleAssetsIntangibleAssetsIndefiniteLivedPolicy" xlink:title="Label : GoodwillAndIntangibleAssetsIntangibleAssetsIndefiniteLivedPolicy to label_GoodwillAndIntangibleAssetsIntangibleAssetsIndefiniteLivedPolicy" />
    <link:label xlink:type="resource" xlink:label="label_GoodwillAndIntangibleAssetsIntangibleAssetsIndefiniteLivedPolicy_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_GoodwillAndIntangibleAssetsIntangibleAssetsIndefiniteLivedPolicy_1" xml:lang="en-US" id="label_GoodwillAndIntangibleAssetsIntangibleAssetsIndefiniteLivedPolicy_1">Indefinite-Lived Intangible assets</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="GoodwillAndIntangibleAssetsIntangibleAssetsIndefiniteLivedPolicy" xlink:to="label_GoodwillAndIntangibleAssetsIntangibleAssetsIndefiniteLivedPolicy_1" xlink:title="Label : GoodwillAndIntangibleAssetsIntangibleAssetsIndefiniteLivedPolicy to label_GoodwillAndIntangibleAssetsIntangibleAssetsIndefiniteLivedPolicy_1" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_IndefiniteLivedLicenseAgreementsWithFederalGovernmentTerm" xlink:label="IndefiniteLivedLicenseAgreementsWithFederalGovernmentTerm" xlink:title="IndefiniteLivedLicenseAgreementsWithFederalGovernmentTerm" />
    <link:label xlink:type="resource" xlink:label="label_IndefiniteLivedLicenseAgreementsWithFederalGovernmentTerm" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_IndefiniteLivedLicenseAgreementsWithFederalGovernmentTerm" xml:lang="en-US" id="label_IndefiniteLivedLicenseAgreementsWithFederalGovernmentTerm">Indefinite-Lived License Agreements with Federal Government, Term</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IndefiniteLivedLicenseAgreementsWithFederalGovernmentTerm" xlink:to="label_IndefiniteLivedLicenseAgreementsWithFederalGovernmentTerm" xlink:title="Label : IndefiniteLivedLicenseAgreementsWithFederalGovernmentTerm to label_IndefiniteLivedLicenseAgreementsWithFederalGovernmentTerm" />
    <link:label xlink:type="resource" xlink:label="label_IndefiniteLivedLicenseAgreementsWithFederalGovernmentTerm_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_IndefiniteLivedLicenseAgreementsWithFederalGovernmentTerm_1" xml:lang="en-US" id="label_IndefiniteLivedLicenseAgreementsWithFederalGovernmentTerm_1">Indefinite-lived license agreements with federal government, term</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IndefiniteLivedLicenseAgreementsWithFederalGovernmentTerm" xlink:to="label_IndefiniteLivedLicenseAgreementsWithFederalGovernmentTerm_1" xlink:title="Label : IndefiniteLivedLicenseAgreementsWithFederalGovernmentTerm to label_IndefiniteLivedLicenseAgreementsWithFederalGovernmentTerm_1" />
    <link:label xlink:type="resource" xlink:label="label_IndefiniteLivedLicenseAgreementsWithFederalGovernmentTerm_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_IndefiniteLivedLicenseAgreementsWithFederalGovernmentTerm_2" xml:lang="en-US" id="label_IndefiniteLivedLicenseAgreementsWithFederalGovernmentTerm_2">The period for indefinite-lived license agreements with federal government, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IndefiniteLivedLicenseAgreementsWithFederalGovernmentTerm" xlink:to="label_IndefiniteLivedLicenseAgreementsWithFederalGovernmentTerm_2" xlink:title="Label : IndefiniteLivedLicenseAgreementsWithFederalGovernmentTerm to label_IndefiniteLivedLicenseAgreementsWithFederalGovernmentTerm_2" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_IndefiniteLivedLicenseAgreementsWithFederalGovernmentRenewalTerm" xlink:label="IndefiniteLivedLicenseAgreementsWithFederalGovernmentRenewalTerm" xlink:title="IndefiniteLivedLicenseAgreementsWithFederalGovernmentRenewalTerm" />
    <link:label xlink:type="resource" xlink:label="label_IndefiniteLivedLicenseAgreementsWithFederalGovernmentRenewalTerm" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_IndefiniteLivedLicenseAgreementsWithFederalGovernmentRenewalTerm" xml:lang="en-US" id="label_IndefiniteLivedLicenseAgreementsWithFederalGovernmentRenewalTerm">Indefinite-Lived License Agreements with Federal Government, Renewal Term</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IndefiniteLivedLicenseAgreementsWithFederalGovernmentRenewalTerm" xlink:to="label_IndefiniteLivedLicenseAgreementsWithFederalGovernmentRenewalTerm" xlink:title="Label : IndefiniteLivedLicenseAgreementsWithFederalGovernmentRenewalTerm to label_IndefiniteLivedLicenseAgreementsWithFederalGovernmentRenewalTerm" />
    <link:label xlink:type="resource" xlink:label="label_IndefiniteLivedLicenseAgreementsWithFederalGovernmentRenewalTerm_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_IndefiniteLivedLicenseAgreementsWithFederalGovernmentRenewalTerm_1" xml:lang="en-US" id="label_IndefiniteLivedLicenseAgreementsWithFederalGovernmentRenewalTerm_1">Indefinite-lived license agreements with federal government, renewal term</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IndefiniteLivedLicenseAgreementsWithFederalGovernmentRenewalTerm" xlink:to="label_IndefiniteLivedLicenseAgreementsWithFederalGovernmentRenewalTerm_1" xlink:title="Label : IndefiniteLivedLicenseAgreementsWithFederalGovernmentRenewalTerm to label_IndefiniteLivedLicenseAgreementsWithFederalGovernmentRenewalTerm_1" />
    <link:label xlink:type="resource" xlink:label="label_IndefiniteLivedLicenseAgreementsWithFederalGovernmentRenewalTerm_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_IndefiniteLivedLicenseAgreementsWithFederalGovernmentRenewalTerm_2" xml:lang="en-US" id="label_IndefiniteLivedLicenseAgreementsWithFederalGovernmentRenewalTerm_2">The renewal period for indefinite-lived license agreements with federal government, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IndefiniteLivedLicenseAgreementsWithFederalGovernmentRenewalTerm" xlink:to="label_IndefiniteLivedLicenseAgreementsWithFederalGovernmentRenewalTerm_2" xlink:title="Label : IndefiniteLivedLicenseAgreementsWithFederalGovernmentRenewalTerm to label_IndefiniteLivedLicenseAgreementsWithFederalGovernmentRenewalTerm_2" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockIssuedDuringPeriodValuePurchaseOfAssets" xlink:label="StockIssuedDuringPeriodValuePurchaseOfAssets" xlink:title="StockIssuedDuringPeriodValuePurchaseOfAssets" />
    <link:label xlink:type="resource" xlink:label="label_StockIssuedDuringPeriodValuePurchaseOfAssets" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_StockIssuedDuringPeriodValuePurchaseOfAssets" xml:lang="en-US" id="label_StockIssuedDuringPeriodValuePurchaseOfAssets">Stock Issued During Period, Value, Purchase of Assets</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockIssuedDuringPeriodValuePurchaseOfAssets" xlink:to="label_StockIssuedDuringPeriodValuePurchaseOfAssets" xlink:title="Label : StockIssuedDuringPeriodValuePurchaseOfAssets to label_StockIssuedDuringPeriodValuePurchaseOfAssets" />
    <link:label xlink:type="resource" xlink:label="label_StockIssuedDuringPeriodValuePurchaseOfAssets_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_StockIssuedDuringPeriodValuePurchaseOfAssets_1" xml:lang="en-US" id="label_StockIssuedDuringPeriodValuePurchaseOfAssets_1">Issuance of shares for asset purchase agreement</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockIssuedDuringPeriodValuePurchaseOfAssets" xlink:to="label_StockIssuedDuringPeriodValuePurchaseOfAssets_1" xlink:title="Label : StockIssuedDuringPeriodValuePurchaseOfAssets to label_StockIssuedDuringPeriodValuePurchaseOfAssets_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockIssuedDuringPeriodSharesPurchaseOfAssets" xlink:label="StockIssuedDuringPeriodSharesPurchaseOfAssets" xlink:title="StockIssuedDuringPeriodSharesPurchaseOfAssets" />
    <link:label xlink:type="resource" xlink:label="label_StockIssuedDuringPeriodSharesPurchaseOfAssets" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_StockIssuedDuringPeriodSharesPurchaseOfAssets" xml:lang="en-US" id="label_StockIssuedDuringPeriodSharesPurchaseOfAssets">Stock Issued During Period, Shares, Purchase of Assets</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockIssuedDuringPeriodSharesPurchaseOfAssets" xlink:to="label_StockIssuedDuringPeriodSharesPurchaseOfAssets" xlink:title="Label : StockIssuedDuringPeriodSharesPurchaseOfAssets to label_StockIssuedDuringPeriodSharesPurchaseOfAssets" />
    <link:label xlink:type="resource" xlink:label="label_StockIssuedDuringPeriodSharesPurchaseOfAssets_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_StockIssuedDuringPeriodSharesPurchaseOfAssets_1" xml:lang="en-US" id="label_StockIssuedDuringPeriodSharesPurchaseOfAssets_1">Issuance of shares for asset purchase agreement (in shares)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockIssuedDuringPeriodSharesPurchaseOfAssets" xlink:to="label_StockIssuedDuringPeriodSharesPurchaseOfAssets_1" xlink:title="Label : StockIssuedDuringPeriodSharesPurchaseOfAssets to label_StockIssuedDuringPeriodSharesPurchaseOfAssets_1" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_ScheduleOfDepreciationUsingTheStraightLineMethodOverTheEstimatedUsefulLivesOfTheAssetsTableTextBlock" xlink:label="ScheduleOfDepreciationUsingTheStraightLineMethodOverTheEstimatedUsefulLivesOfTheAssetsTableTextBlock" xlink:title="ScheduleOfDepreciationUsingTheStraightLineMethodOverTheEstimatedUsefulLivesOfTheAssetsTableTextBlock" />
    <link:label xlink:type="resource" xlink:label="label_ScheduleOfDepreciationUsingTheStraightLineMethodOverTheEstimatedUsefulLivesOfTheAssetsTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ScheduleOfDepreciationUsingTheStraightLineMethodOverTheEstimatedUsefulLivesOfTheAssetsTableTextBlock" xml:lang="en-US" id="label_ScheduleOfDepreciationUsingTheStraightLineMethodOverTheEstimatedUsefulLivesOfTheAssetsTableTextBlock">Schedule of Depreciation Using the Straight Line Method Over the Estimated Useful Lives of the Assets [Table Text Block]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfDepreciationUsingTheStraightLineMethodOverTheEstimatedUsefulLivesOfTheAssetsTableTextBlock" xlink:to="label_ScheduleOfDepreciationUsingTheStraightLineMethodOverTheEstimatedUsefulLivesOfTheAssetsTableTextBlock" xlink:title="Label : ScheduleOfDepreciationUsingTheStraightLineMethodOverTheEstimatedUsefulLivesOfTheAssetsTableTextBlock to label_ScheduleOfDepreciationUsingTheStraightLineMethodOverTheEstimatedUsefulLivesOfTheAssetsTableTextBlock" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfDepreciationUsingTheStraightLineMethodOverTheEstimatedUsefulLivesOfTheAssetsTableTextBlock" xlink:to="label_ScheduleOfDepreciationUsingTheStraightLineMethodOverTheEstimatedUsefulLivesOfTheAssetsTableTextBlock_1" xlink:title="Label : ScheduleOfDepreciationUsingTheStraightLineMethodOverTheEstimatedUsefulLivesOfTheAssetsTableTextBlock to label_ScheduleOfDepreciationUsingTheStraightLineMethodOverTheEstimatedUsefulLivesOfTheAssetsTableTextBlock_1" />
    <link:label xlink:type="resource" xlink:label="label_ScheduleOfDepreciationUsingTheStraightLineMethodOverTheEstimatedUsefulLivesOfTheAssetsTableTextBlock_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_ScheduleOfDepreciationUsingTheStraightLineMethodOverTheEstimatedUsefulLivesOfTheAssetsTableTextBlock_2" xml:lang="en-US" id="label_ScheduleOfDepreciationUsingTheStraightLineMethodOverTheEstimatedUsefulLivesOfTheAssetsTableTextBlock_2">The tabular disclosure of depreciation using straight line method.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfDepreciationUsingTheStraightLineMethodOverTheEstimatedUsefulLivesOfTheAssetsTableTextBlock" xlink:to="label_ScheduleOfDepreciationUsingTheStraightLineMethodOverTheEstimatedUsefulLivesOfTheAssetsTableTextBlock_2" xlink:title="Label : ScheduleOfDepreciationUsingTheStraightLineMethodOverTheEstimatedUsefulLivesOfTheAssetsTableTextBlock to label_ScheduleOfDepreciationUsingTheStraightLineMethodOverTheEstimatedUsefulLivesOfTheAssetsTableTextBlock_2" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_SummaryOfSignificantAccountingPoliciesTable" xlink:label="SummaryOfSignificantAccountingPoliciesTable" xlink:title="SummaryOfSignificantAccountingPoliciesTable" />
    <link:label xlink:type="resource" xlink:label="label_SummaryOfSignificantAccountingPoliciesTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_SummaryOfSignificantAccountingPoliciesTable" xml:lang="en-US" id="label_SummaryOfSignificantAccountingPoliciesTable">Summary of Significant Accounting Policies [Table]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SummaryOfSignificantAccountingPoliciesTable" xlink:to="label_SummaryOfSignificantAccountingPoliciesTable" xlink:title="Label : SummaryOfSignificantAccountingPoliciesTable to label_SummaryOfSignificantAccountingPoliciesTable" />
    <link:label xlink:type="resource" xlink:label="label_SummaryOfSignificantAccountingPoliciesTable_1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_SummaryOfSignificantAccountingPoliciesTable_1" xml:lang="en-US" id="label_SummaryOfSignificantAccountingPoliciesTable_1">Disclosure of information about significant accounting policies of the reporting entity.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SummaryOfSignificantAccountingPoliciesTable" xlink:to="label_SummaryOfSignificantAccountingPoliciesTable_1" xlink:title="Label : SummaryOfSignificantAccountingPoliciesTable to label_SummaryOfSignificantAccountingPoliciesTable_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PropertyPlantAndEquipmentByTypeAxis" xlink:label="PropertyPlantAndEquipmentByTypeAxis" xlink:title="PropertyPlantAndEquipmentByTypeAxis" />
    <link:label xlink:type="resource" xlink:label="label_PropertyPlantAndEquipmentByTypeAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_PropertyPlantAndEquipmentByTypeAxis" xml:lang="en-US" id="label_PropertyPlantAndEquipmentByTypeAxis">Long-Lived Tangible Asset [Axis]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PropertyPlantAndEquipmentByTypeAxis" xlink:to="label_PropertyPlantAndEquipmentByTypeAxis" xlink:title="Label : PropertyPlantAndEquipmentByTypeAxis to label_PropertyPlantAndEquipmentByTypeAxis" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain" xlink:label="PropertyPlantAndEquipmentTypeDomain" xlink:title="PropertyPlantAndEquipmentTypeDomain" />
    <link:label xlink:type="resource" xlink:label="label_PropertyPlantAndEquipmentTypeDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_PropertyPlantAndEquipmentTypeDomain" xml:lang="en-US" id="label_PropertyPlantAndEquipmentTypeDomain">Long-Lived Tangible Asset [Domain]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PropertyPlantAndEquipmentTypeDomain" xlink:to="label_PropertyPlantAndEquipmentTypeDomain" xlink:title="Label : PropertyPlantAndEquipmentTypeDomain to label_PropertyPlantAndEquipmentTypeDomain" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_PinnacleAndTerraPoiNTNetworkAssetsMember" xlink:label="PinnacleAndTerraPoiNTNetworkAssetsMember" xlink:title="PinnacleAndTerraPoiNTNetworkAssetsMember" />
    <link:label xlink:type="resource" xlink:label="label_PinnacleAndTerraPoiNTNetworkAssetsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_PinnacleAndTerraPoiNTNetworkAssetsMember" xml:lang="en-US" id="label_PinnacleAndTerraPoiNTNetworkAssetsMember">Pinnacle and TerraPoiNT Network Assets [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PinnacleAndTerraPoiNTNetworkAssetsMember" xlink:to="label_PinnacleAndTerraPoiNTNetworkAssetsMember" xlink:title="Label : PinnacleAndTerraPoiNTNetworkAssetsMember to label_PinnacleAndTerraPoiNTNetworkAssetsMember" />
    <link:label xlink:type="resource" xlink:label="label_PinnacleAndTerraPoiNTNetworkAssetsMember_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_PinnacleAndTerraPoiNTNetworkAssetsMember_1" xml:lang="en-US" id="label_PinnacleAndTerraPoiNTNetworkAssetsMember_1">Pinnacle and TerraPoiNT network assets [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PinnacleAndTerraPoiNTNetworkAssetsMember" xlink:to="label_PinnacleAndTerraPoiNTNetworkAssetsMember_1" xlink:title="Label : PinnacleAndTerraPoiNTNetworkAssetsMember to label_PinnacleAndTerraPoiNTNetworkAssetsMember_1" />
    <link:label xlink:type="resource" xlink:label="label_PinnacleAndTerraPoiNTNetworkAssetsMember_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_PinnacleAndTerraPoiNTNetworkAssetsMember_2" xml:lang="en-US" id="label_PinnacleAndTerraPoiNTNetworkAssetsMember_2">This member stands for the information pertaining to Pinnacle network and TerraPoiNT network.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PinnacleAndTerraPoiNTNetworkAssetsMember" xlink:to="label_PinnacleAndTerraPoiNTNetworkAssetsMember_2" xlink:title="Label : PinnacleAndTerraPoiNTNetworkAssetsMember to label_PinnacleAndTerraPoiNTNetworkAssetsMember_2" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LeaseholdImprovementsMember" xlink:label="LeaseholdImprovementsMember" xlink:title="LeaseholdImprovementsMember" />
    <link:label xlink:type="resource" xlink:label="label_LeaseholdImprovementsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_LeaseholdImprovementsMember" xml:lang="en-US" id="label_LeaseholdImprovementsMember">Leasehold Improvements [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LeaseholdImprovementsMember" xlink:to="label_LeaseholdImprovementsMember" xlink:title="Label : LeaseholdImprovementsMember to label_LeaseholdImprovementsMember" />
    <link:label xlink:type="resource" xlink:label="label_LeaseholdImprovementsMember_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_LeaseholdImprovementsMember_1" xml:lang="en-US" id="label_LeaseholdImprovementsMember_1">Leasehold Improvements [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LeaseholdImprovementsMember" xlink:to="label_LeaseholdImprovementsMember_1" xlink:title="Label : LeaseholdImprovementsMember to label_LeaseholdImprovementsMember_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueByAssetClassAxis" xlink:label="FairValueByAssetClassAxis" xlink:title="FairValueByAssetClassAxis" />
    <link:label xlink:type="resource" xlink:label="label_FairValueByAssetClassAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_FairValueByAssetClassAxis" xml:lang="en-US" id="label_FairValueByAssetClassAxis">Asset Class [Axis]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FairValueByAssetClassAxis" xlink:to="label_FairValueByAssetClassAxis" xlink:title="Label : FairValueByAssetClassAxis to label_FairValueByAssetClassAxis" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain" xlink:label="FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain" xlink:title="FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain" xlink:to="label_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain" xlink:title="Label : FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain to label_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_SummaryOfSignificantAccountingPoliciesLineItems" xlink:label="SummaryOfSignificantAccountingPoliciesLineItems" xlink:title="SummaryOfSignificantAccountingPoliciesLineItems" />
    <link:label xlink:type="resource" xlink:label="label_SummaryOfSignificantAccountingPoliciesLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_SummaryOfSignificantAccountingPoliciesLineItems" xml:lang="en-US" id="label_SummaryOfSignificantAccountingPoliciesLineItems">Summary of Significant Accounting Policies [Line Items]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SummaryOfSignificantAccountingPoliciesLineItems" xlink:to="label_SummaryOfSignificantAccountingPoliciesLineItems" xlink:title="Label : SummaryOfSignificantAccountingPoliciesLineItems to label_SummaryOfSignificantAccountingPoliciesLineItems" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SummaryOfSignificantAccountingPoliciesLineItems" xlink:to="label_SummaryOfSignificantAccountingPoliciesLineItems_1" xlink:title="Label : SummaryOfSignificantAccountingPoliciesLineItems to label_SummaryOfSignificantAccountingPoliciesLineItems_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FinitelivedIntangibleAssetsAcquired1" xlink:label="FinitelivedIntangibleAssetsAcquired1" xlink:title="FinitelivedIntangibleAssetsAcquired1" />
    <link:label xlink:type="resource" xlink:label="label_FinitelivedIntangibleAssetsAcquired1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_FinitelivedIntangibleAssetsAcquired1" xml:lang="en-US" id="label_FinitelivedIntangibleAssetsAcquired1">Finite-Lived Intangible Assets Acquired</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FinitelivedIntangibleAssetsAcquired1" xlink:to="label_FinitelivedIntangibleAssetsAcquired1" xlink:title="Label : FinitelivedIntangibleAssetsAcquired1 to label_FinitelivedIntangibleAssetsAcquired1" />
    <link:label xlink:type="resource" xlink:label="label_FinitelivedIntangibleAssetsAcquired1_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_FinitelivedIntangibleAssetsAcquired1_1" xml:lang="en-US" id="label_FinitelivedIntangibleAssetsAcquired1_1">Acquired finite-lived intangible assets</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FinitelivedIntangibleAssetsAcquired1" xlink:to="label_FinitelivedIntangibleAssetsAcquired1_1" xlink:title="Label : FinitelivedIntangibleAssetsAcquired1 to label_FinitelivedIntangibleAssetsAcquired1_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PropertyPlantAndEquipmentUsefulLife" xlink:label="PropertyPlantAndEquipmentUsefulLife" xlink:title="PropertyPlantAndEquipmentUsefulLife" />
    <link:label xlink:type="resource" xlink:label="label_PropertyPlantAndEquipmentUsefulLife" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_PropertyPlantAndEquipmentUsefulLife" xml:lang="en-US" id="label_PropertyPlantAndEquipmentUsefulLife">Property, Plant and Equipment, Useful Life</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PropertyPlantAndEquipmentUsefulLife" xlink:to="label_PropertyPlantAndEquipmentUsefulLife" xlink:title="Label : PropertyPlantAndEquipmentUsefulLife to label_PropertyPlantAndEquipmentUsefulLife" />
    <link:label xlink:type="resource" xlink:label="label_PropertyPlantAndEquipmentUsefulLife_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_PropertyPlantAndEquipmentUsefulLife_1" xml:lang="en-US" id="label_PropertyPlantAndEquipmentUsefulLife_1">Estimated useful lives</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PropertyPlantAndEquipmentUsefulLife" xlink:to="label_PropertyPlantAndEquipmentUsefulLife_1" xlink:title="Label : PropertyPlantAndEquipmentUsefulLife to label_PropertyPlantAndEquipmentUsefulLife_1" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_LeaseHoldImprovements" xlink:label="LeaseHoldImprovements" xlink:title="LeaseHoldImprovements" />
    <link:label xlink:type="resource" xlink:label="label_LeaseHoldImprovements" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_LeaseHoldImprovements" xml:lang="en-US" id="label_LeaseHoldImprovements">Lease Hold Improvements</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LeaseHoldImprovements" xlink:to="label_LeaseHoldImprovements" xlink:title="Label : LeaseHoldImprovements to label_LeaseHoldImprovements" />
    <link:label xlink:type="resource" xlink:label="label_LeaseHoldImprovements_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_LeaseHoldImprovements_1" xml:lang="en-US" id="label_LeaseHoldImprovements_1">Estimated useful lives, description</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LeaseHoldImprovements" xlink:to="label_LeaseHoldImprovements_1" xlink:title="Label : LeaseHoldImprovements to label_LeaseHoldImprovements_1" />
    <link:label xlink:type="resource" xlink:label="label_LeaseHoldImprovements_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_LeaseHoldImprovements_2" xml:lang="en-US" id="label_LeaseHoldImprovements_2">Leasehold improvements.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LeaseHoldImprovements" xlink:to="label_LeaseHoldImprovements_2" xlink:title="Label : LeaseHoldImprovements to label_LeaseHoldImprovements_2" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DepreciationNonproduction" xlink:label="DepreciationNonproduction" xlink:title="DepreciationNonproduction" />
    <link:label xlink:type="resource" xlink:label="label_DepreciationNonproduction" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DepreciationNonproduction" xml:lang="en-US" id="label_DepreciationNonproduction">Depreciation, Nonproduction</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DepreciationNonproduction" xlink:to="label_DepreciationNonproduction" xlink:title="Label : DepreciationNonproduction to label_DepreciationNonproduction" />
    <link:label xlink:type="resource" xlink:label="label_DepreciationNonproduction_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_DepreciationNonproduction_1" xml:lang="en-US" id="label_DepreciationNonproduction_1">Depreciation expenses</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DepreciationNonproduction" xlink:to="label_DepreciationNonproduction_1" xlink:title="Label : DepreciationNonproduction to label_DepreciationNonproduction_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustmentAbstract" xlink:label="WeightedAverageNumberDilutedSharesOutstandingAdjustmentAbstract" xlink:title="WeightedAverageNumberDilutedSharesOutstandingAdjustmentAbstract" />
    <link:label xlink:type="resource" xlink:label="label_WeightedAverageNumberDilutedSharesOutstandingAdjustmentAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_WeightedAverageNumberDilutedSharesOutstandingAdjustmentAbstract" xml:lang="en-US" id="label_WeightedAverageNumberDilutedSharesOutstandingAdjustmentAbstract">Weighted Average Number of Shares Outstanding, Diluted, Adjustment [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WeightedAverageNumberDilutedSharesOutstandingAdjustmentAbstract" xlink:to="label_WeightedAverageNumberDilutedSharesOutstandingAdjustmentAbstract" xlink:title="Label : WeightedAverageNumberDilutedSharesOutstandingAdjustmentAbstract to label_WeightedAverageNumberDilutedSharesOutstandingAdjustmentAbstract" />
    <link:label xlink:type="resource" xlink:label="label_WeightedAverageNumberDilutedSharesOutstandingAdjustmentAbstract_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_WeightedAverageNumberDilutedSharesOutstandingAdjustmentAbstract_1" xml:lang="en-US" id="label_WeightedAverageNumberDilutedSharesOutstandingAdjustmentAbstract_1">Denominator</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WeightedAverageNumberDilutedSharesOutstandingAdjustmentAbstract" xlink:to="label_WeightedAverageNumberDilutedSharesOutstandingAdjustmentAbstract_1" xlink:title="Label : WeightedAverageNumberDilutedSharesOutstandingAdjustmentAbstract to label_WeightedAverageNumberDilutedSharesOutstandingAdjustmentAbstract_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment" xlink:label="WeightedAverageNumberDilutedSharesOutstandingAdjustment" xlink:title="WeightedAverageNumberDilutedSharesOutstandingAdjustment" />
    <link:label xlink:type="resource" xlink:label="label_WeightedAverageNumberDilutedSharesOutstandingAdjustment" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_WeightedAverageNumberDilutedSharesOutstandingAdjustment" xml:lang="en-US" id="label_WeightedAverageNumberDilutedSharesOutstandingAdjustment">Weighted Average Number of Shares Outstanding, Diluted, Adjustment</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WeightedAverageNumberDilutedSharesOutstandingAdjustment" xlink:to="label_WeightedAverageNumberDilutedSharesOutstandingAdjustment" xlink:title="Label : WeightedAverageNumberDilutedSharesOutstandingAdjustment to label_WeightedAverageNumberDilutedSharesOutstandingAdjustment" />
    <link:label xlink:type="resource" xlink:label="label_WeightedAverageNumberDilutedSharesOutstandingAdjustment_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_WeightedAverageNumberDilutedSharesOutstandingAdjustment_1" xml:lang="en-US" id="label_WeightedAverageNumberDilutedSharesOutstandingAdjustment_1">Adjustment: Add dilutive shares</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WeightedAverageNumberDilutedSharesOutstandingAdjustment" xlink:to="label_WeightedAverageNumberDilutedSharesOutstandingAdjustment_1" xlink:title="Label : WeightedAverageNumberDilutedSharesOutstandingAdjustment to label_WeightedAverageNumberDilutedSharesOutstandingAdjustment_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IndefinitelivedIntangibleAssetsMember" xlink:label="IndefinitelivedIntangibleAssetsMember" xlink:title="IndefinitelivedIntangibleAssetsMember" />
    <link:label xlink:type="resource" xlink:label="label_IndefinitelivedIntangibleAssetsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_IndefinitelivedIntangibleAssetsMember" xml:lang="en-US" id="label_IndefinitelivedIntangibleAssetsMember">Acquired finite-lived intangible assets [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IndefinitelivedIntangibleAssetsMember" xlink:to="label_IndefinitelivedIntangibleAssetsMember" xlink:title="Label : IndefinitelivedIntangibleAssetsMember to label_IndefinitelivedIntangibleAssetsMember" />
    <link:label xlink:type="resource" xlink:label="label_IndefinitelivedIntangibleAssetsMember_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_IndefinitelivedIntangibleAssetsMember_1" xml:lang="en-US" id="label_IndefinitelivedIntangibleAssetsMember_1">Indefinite-Lived Intangible Assets [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IndefinitelivedIntangibleAssetsMember" xlink:to="label_IndefinitelivedIntangibleAssetsMember_1" xlink:title="Label : IndefinitelivedIntangibleAssetsMember to label_IndefinitelivedIntangibleAssetsMember_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetRetirementObligationPeriodIncreaseDecrease" xlink:label="AssetRetirementObligationPeriodIncreaseDecrease" xlink:title="AssetRetirementObligationPeriodIncreaseDecrease" />
    <link:label xlink:type="resource" xlink:label="label_AssetRetirementObligationPeriodIncreaseDecrease" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AssetRetirementObligationPeriodIncreaseDecrease" xml:lang="en-US" id="label_AssetRetirementObligationPeriodIncreaseDecrease">Asset Retirement Obligation, Period Increase (Decrease)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AssetRetirementObligationPeriodIncreaseDecrease" xlink:to="label_AssetRetirementObligationPeriodIncreaseDecrease" xlink:title="Label : AssetRetirementObligationPeriodIncreaseDecrease to label_AssetRetirementObligationPeriodIncreaseDecrease" />
    <link:label xlink:type="resource" xlink:label="label_AssetRetirementObligationPeriodIncreaseDecrease_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_AssetRetirementObligationPeriodIncreaseDecrease_1" xml:lang="en-US" id="label_AssetRetirementObligationPeriodIncreaseDecrease_1">Asset retired during period</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AssetRetirementObligationPeriodIncreaseDecrease" xlink:to="label_AssetRetirementObligationPeriodIncreaseDecrease_1" xlink:title="Label : AssetRetirementObligationPeriodIncreaseDecrease to label_AssetRetirementObligationPeriodIncreaseDecrease_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic" xlink:label="WeightedAverageNumberOfSharesOutstandingBasic" xlink:title="WeightedAverageNumberOfSharesOutstandingBasic" />
    <link:label xlink:type="resource" xlink:label="label_WeightedAverageNumberOfSharesOutstandingBasic" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="label_WeightedAverageNumberOfSharesOutstandingBasic" xml:lang="en-US" id="label_WeightedAverageNumberOfSharesOutstandingBasic">Weighted average shares &#x2013; basic (in shares)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WeightedAverageNumberOfSharesOutstandingBasic" xlink:to="label_WeightedAverageNumberOfSharesOutstandingBasic" xlink:title="Label : WeightedAverageNumberOfSharesOutstandingBasic to label_WeightedAverageNumberOfSharesOutstandingBasic" />
    <link:label xlink:type="resource" xlink:label="label_WeightedAverageNumberOfSharesOutstandingBasic_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_WeightedAverageNumberOfSharesOutstandingBasic_1" xml:lang="en-US" id="label_WeightedAverageNumberOfSharesOutstandingBasic_1">Weighted Average Number of Shares Outstanding, Basic</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WeightedAverageNumberOfSharesOutstandingBasic" xlink:to="label_WeightedAverageNumberOfSharesOutstandingBasic_1" xlink:title="Label : WeightedAverageNumberOfSharesOutstandingBasic to label_WeightedAverageNumberOfSharesOutstandingBasic_1" />
    <link:label xlink:type="resource" xlink:label="label_WeightedAverageNumberOfSharesOutstandingBasic_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_WeightedAverageNumberOfSharesOutstandingBasic_2" xml:lang="en-US" id="label_WeightedAverageNumberOfSharesOutstandingBasic_2">Weighted average of shares outstanding &#x2013; basic (in shares)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WeightedAverageNumberOfSharesOutstandingBasic" xlink:to="label_WeightedAverageNumberOfSharesOutstandingBasic_2" xlink:title="Label : WeightedAverageNumberOfSharesOutstandingBasic to label_WeightedAverageNumberOfSharesOutstandingBasic_2" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill" xlink:label="ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill" xlink:title="ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill" />
    <link:label xlink:type="resource" xlink:label="label_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill" xml:lang="en-US" id="label_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill">Impairment of Intangible Assets, Indefinite-Lived (Excluding Goodwill)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill" xlink:to="label_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill" xlink:title="Label : ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill to label_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill" />
    <link:label xlink:type="resource" xlink:label="label_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill_1" xml:lang="en-US" id="label_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill_1">Impairment of intangible assets, indefinite-lived</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill" xlink:to="label_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill_1" xlink:title="Label : ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill to label_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PaymentsToAcquireIntangibleAssets" xlink:label="PaymentsToAcquireIntangibleAssets" xlink:title="PaymentsToAcquireIntangibleAssets" />
    <link:label xlink:type="resource" xlink:label="label_PaymentsToAcquireIntangibleAssets" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_PaymentsToAcquireIntangibleAssets" xml:lang="en-US" id="label_PaymentsToAcquireIntangibleAssets">Payments to Acquire Intangible Assets</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PaymentsToAcquireIntangibleAssets" xlink:to="label_PaymentsToAcquireIntangibleAssets" xlink:title="Label : PaymentsToAcquireIntangibleAssets to label_PaymentsToAcquireIntangibleAssets" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_IncreaseThroughInitialRecognitionOfConversionOptionDerivativeLiability" xlink:label="IncreaseThroughInitialRecognitionOfConversionOptionDerivativeLiability" xlink:title="IncreaseThroughInitialRecognitionOfConversionOptionDerivativeLiability" />
    <link:label xlink:type="resource" xlink:label="label_IncreaseThroughInitialRecognitionOfConversionOptionDerivativeLiability" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_IncreaseThroughInitialRecognitionOfConversionOptionDerivativeLiability" xml:lang="en-US" id="label_IncreaseThroughInitialRecognitionOfConversionOptionDerivativeLiability">Increase through initial recognition of conversion option derivative liability</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncreaseThroughInitialRecognitionOfConversionOptionDerivativeLiability" xlink:to="label_IncreaseThroughInitialRecognitionOfConversionOptionDerivativeLiability" xlink:title="Label : IncreaseThroughInitialRecognitionOfConversionOptionDerivativeLiability to label_IncreaseThroughInitialRecognitionOfConversionOptionDerivativeLiability" />
    <link:label xlink:type="resource" xlink:label="label_IncreaseThroughInitialRecognitionOfConversionOptionDerivativeLiability_1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_IncreaseThroughInitialRecognitionOfConversionOptionDerivativeLiability_1" xml:lang="en-US" id="label_IncreaseThroughInitialRecognitionOfConversionOptionDerivativeLiability_1">The increase in conversion option derivative liability due to initial recognition.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncreaseThroughInitialRecognitionOfConversionOptionDerivativeLiability" xlink:to="label_IncreaseThroughInitialRecognitionOfConversionOptionDerivativeLiability_1" xlink:title="Label : IncreaseThroughInitialRecognitionOfConversionOptionDerivativeLiability to label_IncreaseThroughInitialRecognitionOfConversionOptionDerivativeLiability_1" />
    <link:label xlink:type="resource" xlink:label="label_IncreaseThroughInitialRecognitionOfConversionOptionDerivativeLiability_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_IncreaseThroughInitialRecognitionOfConversionOptionDerivativeLiability_2" xml:lang="en-US" id="label_IncreaseThroughInitialRecognitionOfConversionOptionDerivativeLiability_2">Initial recognition of derivative liability</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncreaseThroughInitialRecognitionOfConversionOptionDerivativeLiability" xlink:to="label_IncreaseThroughInitialRecognitionOfConversionOptionDerivativeLiability_2" xlink:title="Label : IncreaseThroughInitialRecognitionOfConversionOptionDerivativeLiability to label_IncreaseThroughInitialRecognitionOfConversionOptionDerivativeLiability_2" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OfficeEquipmentMember" xlink:label="OfficeEquipmentMember" xlink:title="OfficeEquipmentMember" />
    <link:label xlink:type="resource" xlink:label="label_OfficeEquipmentMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_OfficeEquipmentMember" xml:lang="en-US" id="label_OfficeEquipmentMember">Office Equipment [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OfficeEquipmentMember" xlink:to="label_OfficeEquipmentMember" xlink:title="Label : OfficeEquipmentMember to label_OfficeEquipmentMember" />
    <link:label xlink:type="resource" xlink:label="label_OfficeEquipmentMember_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_OfficeEquipmentMember_1" xml:lang="en-US" id="label_OfficeEquipmentMember_1">Office equipment, furniture and internal use software [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OfficeEquipmentMember" xlink:to="label_OfficeEquipmentMember_1" xlink:title="Label : OfficeEquipmentMember to label_OfficeEquipmentMember_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PropertyPlantAndEquipmentPolicyTextBlock" xlink:label="PropertyPlantAndEquipmentPolicyTextBlock" xlink:title="PropertyPlantAndEquipmentPolicyTextBlock" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PropertyPlantAndEquipmentPolicyTextBlock" xlink:to="label_PropertyPlantAndEquipmentPolicyTextBlock" xlink:title="Label : PropertyPlantAndEquipmentPolicyTextBlock to label_PropertyPlantAndEquipmentPolicyTextBlock" />
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    <link:label xlink:type="resource" xlink:label="label_DilutiveSecuritiesEffectOnBasicEarningsPerShareReversalOfInterestExpenseAndAmortizationOfDebtDiscount_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_DilutiveSecuritiesEffectOnBasicEarningsPerShareReversalOfInterestExpenseAndAmortizationOfDebtDiscount_2" xml:lang="en-US" id="label_DilutiveSecuritiesEffectOnBasicEarningsPerShareReversalOfInterestExpenseAndAmortizationOfDebtDiscount_2">Amount of increase (decrease) to net income used for calculating diluted earnings per share (EPS), resulting from reversal of interest expense and amortization of debt discount.</link:label>
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    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_IncreaseDereaseThroughFairValueMeasurementAdjustmentOfConversionOptionDerivativeLiability" xlink:label="IncreaseDereaseThroughFairValueMeasurementAdjustmentOfConversionOptionDerivativeLiability" xlink:title="IncreaseDereaseThroughFairValueMeasurementAdjustmentOfConversionOptionDerivativeLiability" />
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    <link:label xlink:type="resource" xlink:label="label_IncreaseDereaseThroughFairValueMeasurementAdjustmentOfConversionOptionDerivativeLiability_1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_IncreaseDereaseThroughFairValueMeasurementAdjustmentOfConversionOptionDerivativeLiability_1" xml:lang="en-US" id="label_IncreaseDereaseThroughFairValueMeasurementAdjustmentOfConversionOptionDerivativeLiability_1">The increase (decrease) in conversion option derivative liability due to fair value measurement adjustment.</link:label>
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    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommonStockMember" xlink:label="CommonStockMember" xlink:title="CommonStockMember" />
    <link:label xlink:type="resource" xlink:label="label_CommonStockMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_CommonStockMember" xml:lang="en-US" id="label_CommonStockMember">Common Stock</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CommonStockMember" xlink:to="label_CommonStockMember" xlink:title="Label : CommonStockMember to label_CommonStockMember" />
    <link:label xlink:type="resource" xlink:label="label_CommonStockMember_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CommonStockMember_1" xml:lang="en-US" id="label_CommonStockMember_1">Common Stock [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CommonStockMember" xlink:to="label_CommonStockMember_1" xlink:title="Label : CommonStockMember to label_CommonStockMember_1" />
    <link:label xlink:type="resource" xlink:label="label_CommonStockMember_2" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="label_CommonStockMember_2" xml:lang="en-US" id="label_CommonStockMember_2">Common Stock, par value $0.0001 per share</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CommonStockMember" xlink:to="label_CommonStockMember_2" xlink:title="Label : CommonStockMember to label_CommonStockMember_2" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_WarrantMember" xlink:label="WarrantMember" xlink:title="WarrantMember" />
    <link:label xlink:type="resource" xlink:label="label_WarrantMember" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="label_WarrantMember" xml:lang="en-US" id="label_WarrantMember">Warrants, each to purchase one share of Common Stock</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WarrantMember" xlink:to="label_WarrantMember" xlink:title="Label : WarrantMember to label_WarrantMember" />
    <link:label xlink:type="resource" xlink:label="label_WarrantMember_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_WarrantMember_1" xml:lang="en-US" id="label_WarrantMember_1">Warrants</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WarrantMember" xlink:to="label_WarrantMember_1" xlink:title="Label : WarrantMember to label_WarrantMember_1" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WarrantMember" xlink:to="label_WarrantMember_2" xlink:title="Label : WarrantMember to label_WarrantMember_2" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_SusanInsleyMember" xlink:label="SusanInsleyMember" xlink:title="SusanInsleyMember" />
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    <link:label xlink:type="resource" xlink:label="label_SusanInsleyMember_1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_SusanInsleyMember_1" xml:lang="en-US" id="label_SusanInsleyMember_1">This member stands for the information pertaining to &#x201C;Susan Insley&#x201D;.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SusanInsleyMember" xlink:to="label_SusanInsleyMember_1" xlink:title="Label : SusanInsleyMember to label_SusanInsleyMember_1" />
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    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_SammaadShamsMember" xlink:label="SammaadShamsMember" xlink:title="SammaadShamsMember" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SammaadShamsMember" xlink:to="label_SammaadShamsMember" xlink:title="Label : SammaadShamsMember to label_SammaadShamsMember" />
    <link:label xlink:type="resource" xlink:label="label_SammaadShamsMember_1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_SammaadShamsMember_1" xml:lang="en-US" id="label_SammaadShamsMember_1">This member stands for the information pertaining to &#x201C;Sammaad&#xA0;Shams&#x201D;.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SammaadShamsMember" xlink:to="label_SammaadShamsMember_1" xlink:title="Label : SammaadShamsMember to label_SammaadShamsMember_1" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SammaadShamsMember" xlink:to="label_SammaadShamsMember_2" xlink:title="Label : SammaadShamsMember to label_SammaadShamsMember_2" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_ChristianGatesMember" xlink:label="ChristianGatesMember" xlink:title="ChristianGatesMember" />
    <link:label xlink:type="resource" xlink:label="label_ChristianGatesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ChristianGatesMember" xml:lang="en-US" id="label_ChristianGatesMember">Christian Gates [Member]</link:label>
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ChristianGatesMember" xlink:to="label_ChristianGatesMember_1" xlink:title="Label : ChristianGatesMember to label_ChristianGatesMember_1" />
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    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_TreasuryStockValue" xlink:label="TreasuryStockValue" xlink:title="TreasuryStockValue" />
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    <link:label xlink:type="resource" xlink:label="label_TreasuryStockValue_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_TreasuryStockValue_1" xml:lang="en-US" id="label_TreasuryStockValue_1">Treasury Stock, Value</link:label>
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    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear" xlink:label="FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear" xlink:title="FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear" />
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    <link:label xlink:type="resource" xlink:label="label_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear_1" xml:lang="en-US" id="label_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear_1">Finite-Lived Intangible Asset, Expected Amortization, Remainder of Fiscal Year</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear" xlink:to="label_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear_1" xlink:title="Label : FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear to label_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PaymentsToAcquireEquityMethodInvestments" xlink:label="PaymentsToAcquireEquityMethodInvestments" xlink:title="PaymentsToAcquireEquityMethodInvestments" />
    <link:label xlink:type="resource" xlink:label="label_PaymentsToAcquireEquityMethodInvestments" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_PaymentsToAcquireEquityMethodInvestments" xml:lang="en-US" id="label_PaymentsToAcquireEquityMethodInvestments">Payments to Acquire Equity Method Investments</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PaymentsToAcquireEquityMethodInvestments" xlink:to="label_PaymentsToAcquireEquityMethodInvestments" xlink:title="Label : PaymentsToAcquireEquityMethodInvestments to label_PaymentsToAcquireEquityMethodInvestments" />
    <link:label xlink:type="resource" xlink:label="label_PaymentsToAcquireEquityMethodInvestments_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_PaymentsToAcquireEquityMethodInvestments_1" xml:lang="en-US" id="label_PaymentsToAcquireEquityMethodInvestments_1">Purchase of equity method investment</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PaymentsToAcquireEquityMethodInvestments" xlink:to="label_PaymentsToAcquireEquityMethodInvestments_1" xlink:title="Label : PaymentsToAcquireEquityMethodInvestments to label_PaymentsToAcquireEquityMethodInvestments_1" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_TrancheBInvestmentMember" xlink:label="TrancheBInvestmentMember" xlink:title="TrancheBInvestmentMember" />
    <link:label xlink:type="resource" xlink:label="label_TrancheBInvestmentMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_TrancheBInvestmentMember" xml:lang="en-US" id="label_TrancheBInvestmentMember">Tranche B Investment [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="TrancheBInvestmentMember" xlink:to="label_TrancheBInvestmentMember" xlink:title="Label : TrancheBInvestmentMember to label_TrancheBInvestmentMember" />
    <link:label xlink:type="resource" xlink:label="label_TrancheBInvestmentMember_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_TrancheBInvestmentMember_1" xml:lang="en-US" id="label_TrancheBInvestmentMember_1">Series BBB round fund raising [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="TrancheBInvestmentMember" xlink:to="label_TrancheBInvestmentMember_1" xlink:title="Label : TrancheBInvestmentMember to label_TrancheBInvestmentMember_1" />
    <link:label xlink:type="resource" xlink:label="label_TrancheBInvestmentMember_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_TrancheBInvestmentMember_2" xml:lang="en-US" id="label_TrancheBInvestmentMember_2">This member stands for the information pertaining to "Tranche B Investement".</link:label>
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    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction" xlink:label="SaleOfStockNumberOfSharesIssuedInTransaction" xlink:title="SaleOfStockNumberOfSharesIssuedInTransaction" />
    <link:label xlink:type="resource" xlink:label="label_SaleOfStockNumberOfSharesIssuedInTransaction" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="label_SaleOfStockNumberOfSharesIssuedInTransaction" xml:lang="en-US" id="label_SaleOfStockNumberOfSharesIssuedInTransaction">Purchase of equity method investment, shares exchanged</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SaleOfStockNumberOfSharesIssuedInTransaction" xlink:to="label_SaleOfStockNumberOfSharesIssuedInTransaction" xlink:title="Label : SaleOfStockNumberOfSharesIssuedInTransaction to label_SaleOfStockNumberOfSharesIssuedInTransaction" />
    <link:label xlink:type="resource" xlink:label="label_SaleOfStockNumberOfSharesIssuedInTransaction_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_SaleOfStockNumberOfSharesIssuedInTransaction_1" xml:lang="en-US" id="label_SaleOfStockNumberOfSharesIssuedInTransaction_1">Public warrants sold</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SaleOfStockNumberOfSharesIssuedInTransaction" xlink:to="label_SaleOfStockNumberOfSharesIssuedInTransaction_1" xlink:title="Label : SaleOfStockNumberOfSharesIssuedInTransaction to label_SaleOfStockNumberOfSharesIssuedInTransaction_1" />
    <link:label xlink:type="resource" xlink:label="label_SaleOfStockNumberOfSharesIssuedInTransaction_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_SaleOfStockNumberOfSharesIssuedInTransaction_2" xml:lang="en-US" id="label_SaleOfStockNumberOfSharesIssuedInTransaction_2">Sale of Stock, Number of Shares Issued in Transaction</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SaleOfStockNumberOfSharesIssuedInTransaction" xlink:to="label_SaleOfStockNumberOfSharesIssuedInTransaction_2" xlink:title="Label : SaleOfStockNumberOfSharesIssuedInTransaction to label_SaleOfStockNumberOfSharesIssuedInTransaction_2" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SaleOfStockPricePerShare" xlink:label="SaleOfStockPricePerShare" xlink:title="SaleOfStockPricePerShare" />
    <link:label xlink:type="resource" xlink:label="label_SaleOfStockPricePerShare" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_SaleOfStockPricePerShare" xml:lang="en-US" id="label_SaleOfStockPricePerShare">Sale of Stock, Price Per Share</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SaleOfStockPricePerShare" xlink:to="label_SaleOfStockPricePerShare" xlink:title="Label : SaleOfStockPricePerShare to label_SaleOfStockPricePerShare" />
    <link:label xlink:type="resource" xlink:label="label_SaleOfStockPricePerShare_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_SaleOfStockPricePerShare_1" xml:lang="en-US" id="label_SaleOfStockPricePerShare_1">Purchase of equity method investment, shares exchanged price per share</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SaleOfStockPricePerShare" xlink:to="label_SaleOfStockPricePerShare_1" xlink:title="Label : SaleOfStockPricePerShare to label_SaleOfStockPricePerShare_1" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_AdditionalCommitmentForEquityMethodOfInvestment" xlink:label="AdditionalCommitmentForEquityMethodOfInvestment" xlink:title="AdditionalCommitmentForEquityMethodOfInvestment" />
    <link:label xlink:type="resource" xlink:label="label_AdditionalCommitmentForEquityMethodOfInvestment" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AdditionalCommitmentForEquityMethodOfInvestment" xml:lang="en-US" id="label_AdditionalCommitmentForEquityMethodOfInvestment">Additional Commitment for Equity Method of Investment</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AdditionalCommitmentForEquityMethodOfInvestment" xlink:to="label_AdditionalCommitmentForEquityMethodOfInvestment" xlink:title="Label : AdditionalCommitmentForEquityMethodOfInvestment to label_AdditionalCommitmentForEquityMethodOfInvestment" />
    <link:label xlink:type="resource" xlink:label="label_AdditionalCommitmentForEquityMethodOfInvestment_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_AdditionalCommitmentForEquityMethodOfInvestment_1" xml:lang="en-US" id="label_AdditionalCommitmentForEquityMethodOfInvestment_1">Additional commitment for equity method of investment</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AdditionalCommitmentForEquityMethodOfInvestment" xlink:to="label_AdditionalCommitmentForEquityMethodOfInvestment_1" xlink:title="Label : AdditionalCommitmentForEquityMethodOfInvestment to label_AdditionalCommitmentForEquityMethodOfInvestment_1" />
    <link:label xlink:type="resource" xlink:label="label_AdditionalCommitmentForEquityMethodOfInvestment_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_AdditionalCommitmentForEquityMethodOfInvestment_2" xml:lang="en-US" id="label_AdditionalCommitmentForEquityMethodOfInvestment_2">Amount of additional commitment for equity method of investment.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AdditionalCommitmentForEquityMethodOfInvestment" xlink:to="label_AdditionalCommitmentForEquityMethodOfInvestment_2" xlink:title="Label : AdditionalCommitmentForEquityMethodOfInvestment to label_AdditionalCommitmentForEquityMethodOfInvestment_2" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PropertyPlantAndEquipmentOther" xlink:label="PropertyPlantAndEquipmentOther" xlink:title="PropertyPlantAndEquipmentOther" />
    <link:label xlink:type="resource" xlink:label="label_PropertyPlantAndEquipmentOther" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_PropertyPlantAndEquipmentOther" xml:lang="en-US" id="label_PropertyPlantAndEquipmentOther">Property and equipment, net of accumulated depreciation of $16,969 and $16,458 at March 31, 2026 and December 31, 2025, respectively</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PropertyPlantAndEquipmentOther" xlink:to="label_PropertyPlantAndEquipmentOther" xlink:title="Label : PropertyPlantAndEquipmentOther to label_PropertyPlantAndEquipmentOther" />
    <link:label xlink:type="resource" xlink:label="label_PropertyPlantAndEquipmentOther_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_PropertyPlantAndEquipmentOther_1" xml:lang="en-US" id="label_PropertyPlantAndEquipmentOther_1">Property, Plant and Equipment, Other, Gross</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PropertyPlantAndEquipmentOther" xlink:to="label_PropertyPlantAndEquipmentOther_1" xlink:title="Label : PropertyPlantAndEquipmentOther to label_PropertyPlantAndEquipmentOther_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwill" xlink:label="IntangibleAssetsNetExcludingGoodwill" xlink:title="IntangibleAssetsNetExcludingGoodwill" />
    <link:label xlink:type="resource" xlink:label="label_IntangibleAssetsNetExcludingGoodwill" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="label_IntangibleAssetsNetExcludingGoodwill" xml:lang="en-US" id="label_IntangibleAssetsNetExcludingGoodwill">Net Carrying Value</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IntangibleAssetsNetExcludingGoodwill" xlink:to="label_IntangibleAssetsNetExcludingGoodwill" xlink:title="Label : IntangibleAssetsNetExcludingGoodwill to label_IntangibleAssetsNetExcludingGoodwill" />
    <link:label xlink:type="resource" xlink:label="label_IntangibleAssetsNetExcludingGoodwill_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_IntangibleAssetsNetExcludingGoodwill_1" xml:lang="en-US" id="label_IntangibleAssetsNetExcludingGoodwill_1">Intangible Assets, Net (Excluding Goodwill)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IntangibleAssetsNetExcludingGoodwill" xlink:to="label_IntangibleAssetsNetExcludingGoodwill_1" xlink:title="Label : IntangibleAssetsNetExcludingGoodwill to label_IntangibleAssetsNetExcludingGoodwill_1" />
    <link:label xlink:type="resource" xlink:label="label_IntangibleAssetsNetExcludingGoodwill_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_IntangibleAssetsNetExcludingGoodwill_2" xml:lang="en-US" id="label_IntangibleAssetsNetExcludingGoodwill_2">Intangible assets, net</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IntangibleAssetsNetExcludingGoodwill" xlink:to="label_IntangibleAssetsNetExcludingGoodwill_2" xlink:title="Label : IntangibleAssetsNetExcludingGoodwill to label_IntangibleAssetsNetExcludingGoodwill_2" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommonStockValue" xlink:label="CommonStockValue" xlink:title="CommonStockValue" />
    <link:label xlink:type="resource" xlink:label="label_CommonStockValue" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="label_CommonStockValue" xml:lang="en-US" id="label_CommonStockValue">Common stock, authorized 500,000,000 shares; 136,191,797 and 135,504,497 shares issued and 136,059,569 and 135,372,269 shares outstanding at March 31, 2026 and December 31, 2025, respectively</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CommonStockValue" xlink:to="label_CommonStockValue" xlink:title="Label : CommonStockValue to label_CommonStockValue" />
    <link:label xlink:type="resource" xlink:label="label_CommonStockValue_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CommonStockValue_1" xml:lang="en-US" id="label_CommonStockValue_1">Common Stock, Value, Issued</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CommonStockValue" xlink:to="label_CommonStockValue_1" xlink:title="Label : CommonStockValue to label_CommonStockValue_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:label="IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:title="IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" />
    <link:label xlink:type="resource" xlink:label="label_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xml:lang="en-US" id="label_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest">Loss before income taxes and equity method investment loss</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:to="label_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:title="Label : IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest to label_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" />
    <link:label xlink:type="resource" xlink:label="label_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_1" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="label_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_1" xml:lang="en-US" id="label_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_1">Loss before income taxes</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:to="label_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_1" xlink:title="Label : IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest to label_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_1" />
    <link:label xlink:type="resource" xlink:label="label_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_2" xml:lang="en-US" id="label_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_2">Pretax income (loss)</link:label>
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    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:label="NetCashProvidedByUsedInInvestingActivities" xlink:title="NetCashProvidedByUsedInInvestingActivities" />
    <link:label xlink:type="resource" xlink:label="label_NetCashProvidedByUsedInInvestingActivities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_NetCashProvidedByUsedInInvestingActivities" xml:lang="en-US" id="label_NetCashProvidedByUsedInInvestingActivities">Net Cash Provided by (Used in) Investing Activities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NetCashProvidedByUsedInInvestingActivities" xlink:to="label_NetCashProvidedByUsedInInvestingActivities" xlink:title="Label : NetCashProvidedByUsedInInvestingActivities to label_NetCashProvidedByUsedInInvestingActivities" />
    <link:label xlink:type="resource" xlink:label="label_NetCashProvidedByUsedInInvestingActivities_1" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="label_NetCashProvidedByUsedInInvestingActivities_1" xml:lang="en-US" id="label_NetCashProvidedByUsedInInvestingActivities_1">Net cash (used in) provided by investing activities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NetCashProvidedByUsedInInvestingActivities" xlink:to="label_NetCashProvidedByUsedInInvestingActivities_1" xlink:title="Label : NetCashProvidedByUsedInInvestingActivities to label_NetCashProvidedByUsedInInvestingActivities_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ComprehensiveIncomeNetOfTax" xlink:label="ComprehensiveIncomeNetOfTax" xlink:title="ComprehensiveIncomeNetOfTax" />
    <link:label xlink:type="resource" xlink:label="label_ComprehensiveIncomeNetOfTax" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="label_ComprehensiveIncomeNetOfTax" xml:lang="en-US" id="label_ComprehensiveIncomeNetOfTax">Comprehensive loss</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ComprehensiveIncomeNetOfTax" xlink:to="label_ComprehensiveIncomeNetOfTax" xlink:title="Label : ComprehensiveIncomeNetOfTax to label_ComprehensiveIncomeNetOfTax" />
    <link:label xlink:type="resource" xlink:label="label_ComprehensiveIncomeNetOfTax_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ComprehensiveIncomeNetOfTax_1" xml:lang="en-US" id="label_ComprehensiveIncomeNetOfTax_1">Comprehensive income (loss)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ComprehensiveIncomeNetOfTax" xlink:to="label_ComprehensiveIncomeNetOfTax_1" xlink:title="Label : ComprehensiveIncomeNetOfTax to label_ComprehensiveIncomeNetOfTax_1" />
    <link:label xlink:type="resource" xlink:label="label_ComprehensiveIncomeNetOfTax_2" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="label_ComprehensiveIncomeNetOfTax_2" xml:lang="en-US" id="label_ComprehensiveIncomeNetOfTax_2">Comprehensive loss</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ComprehensiveIncomeNetOfTax" xlink:to="label_ComprehensiveIncomeNetOfTax_2" xlink:title="Label : ComprehensiveIncomeNetOfTax to label_ComprehensiveIncomeNetOfTax_2" />
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    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive" xlink:label="FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive" xlink:title="FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive" />
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    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InformationTechnologyAndDataProcessing" xlink:label="InformationTechnologyAndDataProcessing" xlink:title="InformationTechnologyAndDataProcessing" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="GeneralAndAdministrativeExpense" xlink:to="label_GeneralAndAdministrativeExpense" xlink:title="Label : GeneralAndAdministrativeExpense to label_GeneralAndAdministrativeExpense" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="GeneralAndAdministrativeExpense" xlink:to="label_GeneralAndAdministrativeExpense_1" xlink:title="Label : GeneralAndAdministrativeExpense to label_GeneralAndAdministrativeExpense_1" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_PinnacleAndPNTNetworkAssetsMember" xlink:label="PinnacleAndPNTNetworkAssetsMember" xlink:title="PinnacleAndPNTNetworkAssetsMember" />
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    <link:label xlink:type="resource" xlink:label="label_PinnacleAndPNTNetworkAssetsMember_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_PinnacleAndPNTNetworkAssetsMember_1" xml:lang="en-US" id="label_PinnacleAndPNTNetworkAssetsMember_1">Pinnacle and PNT network [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PinnacleAndPNTNetworkAssetsMember" xlink:to="label_PinnacleAndPNTNetworkAssetsMember_1" xlink:title="Label : PinnacleAndPNTNetworkAssetsMember to label_PinnacleAndPNTNetworkAssetsMember_1" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PinnacleAndPNTNetworkAssetsMember" xlink:to="label_PinnacleAndPNTNetworkAssetsMember_2" xlink:title="Label : PinnacleAndPNTNetworkAssetsMember to label_PinnacleAndPNTNetworkAssetsMember_2" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_AcquiredIndefiniteLivedIntangibleAssetsLicensesTerm" xlink:label="AcquiredIndefiniteLivedIntangibleAssetsLicensesTerm" xlink:title="AcquiredIndefiniteLivedIntangibleAssetsLicensesTerm" />
    <link:label xlink:type="resource" xlink:label="label_AcquiredIndefiniteLivedIntangibleAssetsLicensesTerm" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AcquiredIndefiniteLivedIntangibleAssetsLicensesTerm" xml:lang="en-US" id="label_AcquiredIndefiniteLivedIntangibleAssetsLicensesTerm">Acquired Indefinite Lived Intangible Assets Licenses Term</link:label>
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AcquiredIndefiniteLivedIntangibleAssetsLicensesTerm" xlink:to="label_AcquiredIndefiniteLivedIntangibleAssetsLicensesTerm_2" xlink:title="Label : AcquiredIndefiniteLivedIntangibleAssetsLicensesTerm to label_AcquiredIndefiniteLivedIntangibleAssetsLicensesTerm_2" />
    <link:loc xlink:type="locator" xlink:href="nn-20260331.xsd#nn_AcquiredIndefiniteLivedIntangibleAssetsLicensesRenewableTerm" xlink:label="AcquiredIndefiniteLivedIntangibleAssetsLicensesRenewableTerm" xlink:title="AcquiredIndefiniteLivedIntangibleAssetsLicensesRenewableTerm" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AcquiredIndefiniteLivedIntangibleAssetsLicensesRenewableTerm" xlink:to="label_AcquiredIndefiniteLivedIntangibleAssetsLicensesRenewableTerm_1" xlink:title="Label : AcquiredIndefiniteLivedIntangibleAssetsLicensesRenewableTerm to label_AcquiredIndefiniteLivedIntangibleAssetsLicensesRenewableTerm_1" />
    <link:label xlink:type="resource" xlink:label="label_AcquiredIndefiniteLivedIntangibleAssetsLicensesRenewableTerm_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_AcquiredIndefiniteLivedIntangibleAssetsLicensesRenewableTerm_2" xml:lang="en-US" id="label_AcquiredIndefiniteLivedIntangibleAssetsLicensesRenewableTerm_2">Acquired indefinite lived intangible assets licenses renewable term.</link:label>
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    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetAcquisitionContingentConsiderationLiability" xlink:label="AssetAcquisitionContingentConsiderationLiability" xlink:title="AssetAcquisitionContingentConsiderationLiability" />
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    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect" xlink:label="CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect" xlink:title="CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect" />
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    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongTermDebtNoncurrent" xlink:label="LongTermDebtNoncurrent" xlink:title="LongTermDebtNoncurrent" />
    <link:label xlink:type="resource" xlink:label="label_LongTermDebtNoncurrent" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="label_LongTermDebtNoncurrent" xml:lang="en-US" id="label_LongTermDebtNoncurrent">Long-term debt, net</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LongTermDebtNoncurrent" xlink:to="label_LongTermDebtNoncurrent" xlink:title="Label : LongTermDebtNoncurrent to label_LongTermDebtNoncurrent" />
    <link:label xlink:type="resource" xlink:label="label_LongTermDebtNoncurrent_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_LongTermDebtNoncurrent_1" xml:lang="en-US" id="label_LongTermDebtNoncurrent_1">Long-Term Debt, Excluding Current Maturities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LongTermDebtNoncurrent" xlink:to="label_LongTermDebtNoncurrent_1" xlink:title="Label : LongTermDebtNoncurrent to label_LongTermDebtNoncurrent_1" />
    <link:label xlink:type="resource" xlink:label="label_LongTermDebtNoncurrent_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_LongTermDebtNoncurrent_2" xml:lang="en-US" id="label_LongTermDebtNoncurrent_2">Carrying value of the Notes, net of debt issuance cost and discount</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LongTermDebtNoncurrent" xlink:to="label_LongTermDebtNoncurrent_2" xlink:title="Label : LongTermDebtNoncurrent to label_LongTermDebtNoncurrent_2" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxesPaidNet" xlink:label="IncomeTaxesPaidNet" xlink:title="IncomeTaxesPaidNet" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncomeTaxesPaidNet" xlink:to="label_IncomeTaxesPaidNet" xlink:title="Label : IncomeTaxesPaidNet to label_IncomeTaxesPaidNet" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SellingGeneralAndAdministrativeExpense" xlink:to="label_SellingGeneralAndAdministrativeExpense" xlink:title="Label : SellingGeneralAndAdministrativeExpense to label_SellingGeneralAndAdministrativeExpense" />
    <link:label xlink:type="resource" xlink:label="label_SellingGeneralAndAdministrativeExpense_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_SellingGeneralAndAdministrativeExpense_1" xml:lang="en-US" id="label_SellingGeneralAndAdministrativeExpense_1">Selling, general and&#xA0;administrative</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SellingGeneralAndAdministrativeExpense" xlink:to="label_SellingGeneralAndAdministrativeExpense_1" xlink:title="Label : SellingGeneralAndAdministrativeExpense to label_SellingGeneralAndAdministrativeExpense_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetIncomeLoss" xlink:label="NetIncomeLoss" xlink:title="NetIncomeLoss" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NetIncomeLoss" xlink:to="label_NetIncomeLoss" xlink:title="Label : NetIncomeLoss to label_NetIncomeLoss" />
    <link:label xlink:type="resource" xlink:label="label_NetIncomeLoss_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_NetIncomeLoss_1" xml:lang="en-US" id="label_NetIncomeLoss_1">Net Income (Loss) Attributable to Parent</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NetIncomeLoss" xlink:to="label_NetIncomeLoss_1" xlink:title="Label : NetIncomeLoss to label_NetIncomeLoss_1" />
    <link:label xlink:type="resource" xlink:label="label_NetIncomeLoss_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_NetIncomeLoss_2" xml:lang="en-US" id="label_NetIncomeLoss_2">Net loss</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NetIncomeLoss" xlink:to="label_NetIncomeLoss_2" xlink:title="Label : NetIncomeLoss to label_NetIncomeLoss_2" />
    <link:label xlink:type="resource" xlink:label="label_NetIncomeLoss_3" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="label_NetIncomeLoss_3" xml:lang="en-US" id="label_NetIncomeLoss_3">Net loss</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NetIncomeLoss" xlink:to="label_NetIncomeLoss_3" xlink:title="Label : NetIncomeLoss to label_NetIncomeLoss_3" />
    <link:label xlink:type="resource" xlink:label="label_NetIncomeLoss_4" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="label_NetIncomeLoss_4" xml:lang="en-US" id="label_NetIncomeLoss_4">Net loss</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NetIncomeLoss" xlink:to="label_NetIncomeLoss_4" xlink:title="Label : NetIncomeLoss to label_NetIncomeLoss_4" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic" xlink:label="NetIncomeLossAvailableToCommonStockholdersBasic" xlink:title="NetIncomeLossAvailableToCommonStockholdersBasic" />
    <link:label xlink:type="resource" xlink:label="label_NetIncomeLossAvailableToCommonStockholdersBasic" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="label_NetIncomeLossAvailableToCommonStockholdersBasic" xml:lang="en-US" id="label_NetIncomeLossAvailableToCommonStockholdersBasic">Net loss attributable to common stockholders</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NetIncomeLossAvailableToCommonStockholdersBasic" xlink:to="label_NetIncomeLossAvailableToCommonStockholdersBasic" xlink:title="Label : NetIncomeLossAvailableToCommonStockholdersBasic to label_NetIncomeLossAvailableToCommonStockholdersBasic" />
    <link:label xlink:type="resource" xlink:label="label_NetIncomeLossAvailableToCommonStockholdersBasic_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_NetIncomeLossAvailableToCommonStockholdersBasic_1" xml:lang="en-US" id="label_NetIncomeLossAvailableToCommonStockholdersBasic_1">Net loss attributable to common stockholders &#x2013; basic</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NetIncomeLossAvailableToCommonStockholdersBasic" xlink:to="label_NetIncomeLossAvailableToCommonStockholdersBasic_1" xlink:title="Label : NetIncomeLossAvailableToCommonStockholdersBasic to label_NetIncomeLossAvailableToCommonStockholdersBasic_1" />
    <link:label xlink:type="resource" xlink:label="label_NetIncomeLossAvailableToCommonStockholdersBasic_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_NetIncomeLossAvailableToCommonStockholdersBasic_2" xml:lang="en-US" id="label_NetIncomeLossAvailableToCommonStockholdersBasic_2">Net Income (Loss) Available to Common Stockholders, Basic</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NetIncomeLossAvailableToCommonStockholdersBasic" xlink:to="label_NetIncomeLossAvailableToCommonStockholdersBasic_2" xlink:title="Label : NetIncomeLossAvailableToCommonStockholdersBasic to label_NetIncomeLossAvailableToCommonStockholdersBasic_2" />
    <link:label xlink:type="resource" xlink:label="label_NetIncomeLossAvailableToCommonStockholdersBasic_3" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="label_NetIncomeLossAvailableToCommonStockholdersBasic_3" xml:lang="en-US" id="label_NetIncomeLossAvailableToCommonStockholdersBasic_3">Net loss attributable to common stockholders</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NetIncomeLossAvailableToCommonStockholdersBasic" xlink:to="label_NetIncomeLossAvailableToCommonStockholdersBasic_3" xlink:title="Label : NetIncomeLossAvailableToCommonStockholdersBasic to label_NetIncomeLossAvailableToCommonStockholdersBasic_3" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted" xlink:label="NetIncomeLossAvailableToCommonStockholdersDiluted" xlink:title="NetIncomeLossAvailableToCommonStockholdersDiluted" />
    <link:label xlink:type="resource" xlink:label="label_NetIncomeLossAvailableToCommonStockholdersDiluted" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_NetIncomeLossAvailableToCommonStockholdersDiluted" xml:lang="en-US" id="label_NetIncomeLossAvailableToCommonStockholdersDiluted">Net Income (Loss) Available to Common Stockholders, Diluted</link:label>
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    <link:label xlink:type="resource" xlink:label="label_NetIncomeLossAvailableToCommonStockholdersDiluted_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_NetIncomeLossAvailableToCommonStockholdersDiluted_1" xml:lang="en-US" id="label_NetIncomeLossAvailableToCommonStockholdersDiluted_1">Net loss attributable to common stockholders &#x2013; diluted</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NetIncomeLossAvailableToCommonStockholdersDiluted" xlink:to="label_NetIncomeLossAvailableToCommonStockholdersDiluted_1" xlink:title="Label : NetIncomeLossAvailableToCommonStockholdersDiluted to label_NetIncomeLossAvailableToCommonStockholdersDiluted_1" />
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    <link:label xlink:type="resource" xlink:label="label_WeightedAverageNumberOfDilutedSharesOutstanding" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="label_WeightedAverageNumberOfDilutedSharesOutstanding" xml:lang="en-US" id="label_WeightedAverageNumberOfDilutedSharesOutstanding">Weighted average shares &#x2013; diluted (in shares)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WeightedAverageNumberOfDilutedSharesOutstanding" xlink:to="label_WeightedAverageNumberOfDilutedSharesOutstanding" xlink:title="Label : WeightedAverageNumberOfDilutedSharesOutstanding to label_WeightedAverageNumberOfDilutedSharesOutstanding" />
    <link:label xlink:type="resource" xlink:label="label_WeightedAverageNumberOfDilutedSharesOutstanding_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_WeightedAverageNumberOfDilutedSharesOutstanding_1" xml:lang="en-US" id="label_WeightedAverageNumberOfDilutedSharesOutstanding_1">Weighted average of shares outstanding &#x2013; diluted (in shares)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WeightedAverageNumberOfDilutedSharesOutstanding" xlink:to="label_WeightedAverageNumberOfDilutedSharesOutstanding_1" xlink:title="Label : WeightedAverageNumberOfDilutedSharesOutstanding to label_WeightedAverageNumberOfDilutedSharesOutstanding_1" />
    <link:label xlink:type="resource" xlink:label="label_WeightedAverageNumberOfDilutedSharesOutstanding_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_WeightedAverageNumberOfDilutedSharesOutstanding_2" xml:lang="en-US" id="label_WeightedAverageNumberOfDilutedSharesOutstanding_2">Weighted Average Number of Shares Outstanding, Diluted</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WeightedAverageNumberOfDilutedSharesOutstanding" xlink:to="label_WeightedAverageNumberOfDilutedSharesOutstanding_2" xlink:title="Label : WeightedAverageNumberOfDilutedSharesOutstanding to label_WeightedAverageNumberOfDilutedSharesOutstanding_2" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EarningsPerShareBasic" xlink:label="EarningsPerShareBasic" xlink:title="EarningsPerShareBasic" />
    <link:label xlink:type="resource" xlink:label="label_EarningsPerShareBasic" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="label_EarningsPerShareBasic" xml:lang="en-US" id="label_EarningsPerShareBasic">Basic loss per share (in dollars per share)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EarningsPerShareBasic" xlink:to="label_EarningsPerShareBasic" xlink:title="Label : EarningsPerShareBasic to label_EarningsPerShareBasic" />
    <link:label xlink:type="resource" xlink:label="label_EarningsPerShareBasic_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_EarningsPerShareBasic_1" xml:lang="en-US" id="label_EarningsPerShareBasic_1">Net loss attributable to common stockholders per share &#x2013; basic (in dollars per share)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EarningsPerShareBasic" xlink:to="label_EarningsPerShareBasic_1" xlink:title="Label : EarningsPerShareBasic to label_EarningsPerShareBasic_1" />
    <link:label xlink:type="resource" xlink:label="label_EarningsPerShareBasic_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_EarningsPerShareBasic_2" xml:lang="en-US" id="label_EarningsPerShareBasic_2">Earnings Per Share, Basic</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EarningsPerShareBasic" xlink:to="label_EarningsPerShareBasic_2" xlink:title="Label : EarningsPerShareBasic to label_EarningsPerShareBasic_2" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EarningsPerShareDiluted" xlink:label="EarningsPerShareDiluted" xlink:title="EarningsPerShareDiluted" />
    <link:label xlink:type="resource" xlink:label="label_EarningsPerShareDiluted" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_EarningsPerShareDiluted" xml:lang="en-US" id="label_EarningsPerShareDiluted">Diluted loss per share (in dollars per share)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EarningsPerShareDiluted" xlink:to="label_EarningsPerShareDiluted" xlink:title="Label : EarningsPerShareDiluted to label_EarningsPerShareDiluted" />
    <link:label xlink:type="resource" xlink:label="label_EarningsPerShareDiluted_1" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="label_EarningsPerShareDiluted_1" xml:lang="en-US" id="label_EarningsPerShareDiluted_1">Net loss attributable to common stockholders per share &#x2013; diluted (in dollars per share)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EarningsPerShareDiluted" xlink:to="label_EarningsPerShareDiluted_1" xlink:title="Label : EarningsPerShareDiluted to label_EarningsPerShareDiluted_1" />
    <link:label xlink:type="resource" xlink:label="label_EarningsPerShareDiluted_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_EarningsPerShareDiluted_2" xml:lang="en-US" id="label_EarningsPerShareDiluted_2">Net income (loss) attributable to common stockholders per share - diluted</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EarningsPerShareDiluted" xlink:to="label_EarningsPerShareDiluted_2" xlink:title="Label : EarningsPerShareDiluted to label_EarningsPerShareDiluted_2" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProfitLoss" xlink:label="ProfitLoss" xlink:title="ProfitLoss" />
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    <link:label xlink:type="resource" xlink:label="label_ProfitLoss_1" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="label_ProfitLoss_1" xml:lang="en-US" id="label_ProfitLoss_1">Net loss</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ProfitLoss" xlink:to="label_ProfitLoss_1" xlink:title="Label : ProfitLoss to label_ProfitLoss_1" />
    <link:label xlink:type="resource" xlink:label="label_ProfitLoss_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ProfitLoss_2" xml:lang="en-US" id="label_ProfitLoss_2">Net loss</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ProfitLoss" xlink:to="label_ProfitLoss_2" xlink:title="Label : ProfitLoss to label_ProfitLoss_2" />
    <link:label xlink:type="resource" xlink:label="label_ProfitLoss_3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ProfitLoss_3" xml:lang="en-US" id="label_ProfitLoss_3">Net Income (Loss), Including Portion Attributable to Noncontrolling Interest</link:label>
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    <link:label xlink:type="resource" xlink:label="label_ProfitLoss_4" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:title="label_ProfitLoss_4" xml:lang="en-US" id="label_ProfitLoss_4">Consolidated net loss</link:label>
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockIssuedDuringPeriodSharesStockOptionsExercised" xlink:to="label_StockIssuedDuringPeriodSharesStockOptionsExercised" xlink:title="Label : StockIssuedDuringPeriodSharesStockOptionsExercised to label_StockIssuedDuringPeriodSharesStockOptionsExercised" />
    <link:label xlink:type="resource" xlink:label="label_StockIssuedDuringPeriodSharesStockOptionsExercised_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_StockIssuedDuringPeriodSharesStockOptionsExercised_1" xml:lang="en-US" id="label_StockIssuedDuringPeriodSharesStockOptionsExercised_1">Exercise of common stock options (in shares)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockIssuedDuringPeriodSharesStockOptionsExercised" xlink:to="label_StockIssuedDuringPeriodSharesStockOptionsExercised_1" xlink:title="Label : StockIssuedDuringPeriodSharesStockOptionsExercised to label_StockIssuedDuringPeriodSharesStockOptionsExercised_1" />
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    <link:label xlink:type="resource" xlink:label="label_ParentMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ParentMember" xml:lang="en-US" id="label_ParentMember">Parent [Member]</link:label>
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths" xlink:to="label_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths" xlink:title="Label : FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths to label_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths" />
    <link:label xlink:type="resource" xlink:label="label_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_1" xml:lang="en-US" id="label_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_1">2027</link:label>
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